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March 3, 2023
This month’s Domestic Swine Disease Monitoring Report brings information about the activity of the PRRSV Lineage 1C variant of RFLP 1-4-4 in US eastern states such as Indiana, Tennessee, Ohio, and Pennsylvania. For enteric coronaviruses, PEDV and PDCoV positivity was within expected ranges in February and TGEV has no RT-PCR detection in the SDRS database for almost two years. Regarding Mycoplasma hyopneumoniae, there was an increase in submissions, but with no increase in positivity. PCV2 had an increased positivity in the wean-to-market category. Also, PDCoV, PCV2, and Clostridiosis had spikes in the number of confirmed tissue diagnosis cases during February 2023. In the SDRS podcast, hosts talk with Dr. Rebecca Robbins about the dissemination of the PRRSV L1C variant in US eastern states, enteric coronavirus elimination, and usage of SDRS data for animal health decisions.
February 6, 2023
This month’s Domestic Swine Disease Monitoring Report, marking five years of the program, brings information about the PRSSV Lineage 1C variant RFLP 1-4-4, predominantly detected in Missouri, Iowa, and Minnesota in January. RT-PCR detection of PEDV and Delta coronavirus increased in all age categories. However, there was a slight decrease in PEDV detection in the last weeks of January. Also, PEDV, PDCoV, and PCV2 had spikes in the number of confirmed tissue diagnosis cases during January 2023. Regarding Mycoplasma hyopneumoniae, 2022 had the lowest percentage of positive PCR detection from sow farms since 2011. In the podcast, the SDRS hosts talk with Dr. Jordan Gebhardt, assistant professor at Kansas State University, about the dissemination of swine pathogens through animal feed manufacturing facilities, feed mitigation and biosecurity strategies, and Swine Health Improvement Plan (US SHIP) initiatives on feed biosecurity.
January 3, 2023
This month’s Domestic Swine Disease Monitoring Report includes information about the increased RT-PCR detection of PRRSV in adult/sow farm age category, moreover, the emergence of Lineage 1C RFLP 1-2-4 with double detection in 2022 compared with 2021. In addition, the SDRS detected this strain in Iowa, Missouri, Minnesota, Indiana, Illinois, and Ohio. Influenza A virus sharply decreased RT-PCR positive detection in all age categories. Also, PEDV and PDCoV RT-PCR detection had a moderate increase in the percentage of positive submissions, mainly in the wean-to-market age category, followed by an increased number of confirmed tissue diagnoses of these enteric coronaviruses. In the podcast, the SDRS hosts talk with Dr. Clayton Johnson, partner and veterinarian at Carthage Veterinary Services, about the missing puzzle in PRRSV controlling, PRRSV Lineage 1C variant strain scenario, Lineage 1C RFLP 1-2-4 emergence, and PEDV elimination programs.
December 5, 2022
November 1, 2022
October 4, 2022
This month’s Domestic Swine Disease Monitoring Report brings onboard Influenza A virus subtype detection by PCR data from all five participating veterinary diagnostic laboratory with a historical summary highlighted on the SDRS bonus page. Also, the SDRS reports increased activity of PRRSV in wean-to-finish sites, mainly in South Dakota, Nebraska, Missouri, Indiana, and Oklahoma. Mycoplasma hyopneumoniae also had an increase in detection in grow-finish sites, with some relationship with the increased PRRSV activity. PDCoV detection is still low across the US, having no positive submissions in the week of September 12. In the podcast, SDRS hosts talk with Dr. Andrew Bowman, associate professor at The Ohio State University, about the dynamics of Influenza A virus bi-directional transmission. They also talk about IAV spillover cases in agricultural state fairs and the importance of IAV vaccination in decreasing public health risks.
September 6, 2022
This month’s Domestic Swine Disease Monitoring Report reveals increased detected activity of a PRRSV strain classified as Lineage 1C RFLP 1-2-4 across the US. August 2022 had the lowest level of PDCoV detection since 2018. Even though there was a considerable reduction in the PEDV percentage of positive submissions tested by RT-PCR, reports are still above forecasted levels since the end of January 2022.
In the podcast, the SDRS hosts talk with Dr. Jianqiang Zhang, a professor at Iowa State University and a diagnostic virologist focusing on swine medicine, about PRRSV isolation, comparison of PRRSV sequences from virus isolates versus clinical samples, and updates on clinical consequences of PRRSV 1-4-4 L1C variant infection.
August 1, 2022
This month’s Domestic Swine Disease Monitoring Report reveals a within-expected RT-PCR detection for PRRSV for July. However, PRRSV detection in three states (Nebraska, Missouri, and Indiana) remains above state-specific baseline levels, with RFLP 1-4-4 L1C variant being predominantly detected in two of the three states (Nebraska and Missouri). Also, a non-expected increase of respiratory agents activity in the summer, such as a moderate increase in Influenza A virus in the RT-PCR positive detection in the wean-to-market category, and overall increased positive PCR detection for Mycoplasma hyopneumoniae is noted.
In the podcast, the SDRS hosts talk with Dr. Marcelo Almeida, clinical assistant professor at Iowa State University and diagnostician at ISU-VDL, about post-weaning colibacillosis, APP outbreak investigation, and the importance of population-based samples for disease monitoring.
July 5, 2022
This month’s Domestic Swine Disease Monitoring Report reveals a moderate decrease in PCR detection for PRRSV and PEDV. However, PEDV overall RT-PCR detection in six states (NC, KS, NE, IA, MO, and MN) and PRRSV detection in two states (NE and MO) remains above state-specific baseline levels. Also, PCV2 had a marked increase in the PCR detection in the wean-to-market category. In the podcast, the SDRS hosts talk with Dr. Fernando Bortolozzo, Professor at Universidade Federal do Rio Grande do Sul (Brazil), about pre-weaning mortality: USA x Latin America, the importance of day one care, cross-fostering, and colostrum intake, and implementations to improve pre-weaning mortality. The Swine Disease Reporting System podcast is now on Spotify, Apple podcast, Google podcast, and Amazon Music.
June 3, 2022
This month’s Domestic Swine Disease Monitoring Report brings information about an overall moderate decrease in detection of PRRSV and PEDV in May. Even though this is the case, some regions still have activity of PRRSV (NE, IL, IN, and MO) and PEDV (NC, KS, IA, MO, and MN) above state-specific baseline levels. Also, this month’s report brings the predominant PRRSV strains detected in the states with high activity. In the podcast, the SDRS hosts talk with Dr. Guilherme Cezar, the new SRDRS coordinator, about his experience in animal health management, disease management, control, and his roles and contributions to the US swine industry under the SDRS project.
May 3, 2022
This month’s Domestic Swine Disease Monitoring Report brings onboard porcine circovirus type 2 virus DNA detection by qPCR data from all five participating veterinary diagnostic laboratories with a historical summary highlighted on the SDRS bonus page. There was increased activity of PRRSV in some particular regions, i.e., Missouri and Nebraska. The activity of PEDV is still above expected levels since the end of January, with increased activity in Oklahoma, Kansas, Nebraska, Iowa, and North Carolina. In the podcast, SDRS hosts talk with Dr. Dustin Oedekoven, chief veterinarian at the National Pork Board and current president of the United States Animal Health Association, about FAD preparedness, the importance of collaboration between regulatory and industry organizations, and the application of tools for controlling/monitoring endemic pathogens.
April 5, 2022
This month’s Domestic Swine Disease Monitoring Report brings onboard Influenza A virus RNA detection by RT-PCR data from all five participating veterinary diagnostic labs with a historical summary highlighted on the SDRS bonus page. There was increased activity of PRRSV at a regional level in some particular areas, i.e., Missouri, Nebraska, Illinois, and Indiana. PEDV activity is still above expected levels since the end of January. In the podcast, the SDRS hosts talk with Dr. Brigitte Mason, field veterinarian at Country View Family Farms, Dr. Paul Yeske, veterinarian and partner at Swine Vet Center, Dr. Phillip Gauger, head of the molecular section at ISU-VDL, and Dr. Tara Donovan, leader of the health assurance team at Hanor Company, about recent advancements in PRRSV management, strategic FAD surveillance, low-hanging fruits in biosecurity, and how to take full advantage of diagnostic data for animal health decision making.
March 1, 2022
This month’s Domestic Swine Disease Monitoring Report fully brings onboard the Ohio Animal Disease and Diagnostic Laboratory PCR data. There was increased activity of porcine reproductive and respiratory syndrome virus (PRRSV) in some particular regions during February. More intense activity of porcine epidemic diarrhea virus (PEDV) has been detected, with levels of detection being above expected throughout February. The SDRS bonus page brings results of a PRRSV L1C variant virulence study experiment. In the podcast, the SDRS hosts talk with SDRS VDL champions, Drs. Main, Matias-Ferreyra, Prarat, Pillatzki, and Torrison, about their perspective and vision on the major contributions of the SDRS collaborative effort to help swine stakeholders make informed decisions to improve animal health and protect the national food sovereignty.
February 1, 2022
This month’s Domestic Swine Disease Monitoring Report shows a moderate decrease in detection of porcine reproductive and respiratory syndrome virus (PRRSV) in wean-to-market sites. Overall, there have been three consecutive year-over-year increases in submissions and positivity of PRRSV PCRs. In the second half of January, more intense activity of enteric coronavirus, i.e., porcine epidemic diarrhea virus (PEDV), porcine deltacoronavirus (PDCoV), transmissible gastroenteritis virus (TGEV), has been detected. The levels of PEDV detection were above expected in the last week of January. The SDRS bonus page brings a 2021 PRRV strains detection retrospective. In the podcast, Drs. Linhares, Magalhães, and Trevisan discuss the report, potential reasons for the observed changes, and the information presented on each page of the PDF report.
January 3, 2022
This month’s Domestic Swine Disease Monitoring Report shows that a moderate increase in detection of porcine reproductive and respiratory syndrome virus (PRRSV) in breeding herds occurred in December and agreed with past reports that have highlighted that spike in grow-finish pigs (seen since September) usually is followed by increased activity in breeding herds. Detection of enteric coronavirus, i.e., porcine epidemic diarrhea virus (PEDV), porcine deltacorona virus (PDCoV), transmissible gastroenteritis (TGE), and M. hyopneumoniae by PCR are according to forecasted levels for this time of the year. The SDRS bonus page brings a 2021 SDRS retrospective. In the podcast, the SDRS hosts talk with Dr. Luc Dufresne, Director of Veterinary Services at Seaboard Foods, about his experiences in animal health management, disease management, control, and his vision for the swine industry to better handle animal health interventions for major agents.
December 2, 2021
This month’s Domestic Swine Disease Monitoring Report shows a moderate increase in detection of porcine reproductive and respiratory syndrome virus (PRRSV) in breeding herds occurred in November. This finding agrees with past reports that have highlighted spikes in grow-finish pigs (seen since September) usually are followed by increased activity in breeding herds. Detection of enteric coronaviruses, i.e., porcine epidemic diarrhea virus (PEDV), porcine delta coronavirus (PDCoV), transmissible gastroenteritis (TGE), and M. hyopneumoniae, by PCR are at expected levels for this time of the year. In the podcast, SDRS hosts talk with Dr. Peter Schneider, field veterinarian at Innovative Agriculture Solutions, LLC, about his experience on animal health management, disease management, control, and his advice to the swine industry to better handle animal health interventions.
November 2, 2021
This month’s Domestic Swine Disease Monitoring Report shows a substantial increase in detection of porcine reproductive and respiratory syndrome virus (PRRSV) in the wean-to-market category was associated with a new wave of detection of PRRSV RFLP 1-4-4 L1C variant strain. Also, a moderate increase in PEDV detection in the age category wean-to-market was observed in October. The advisory group has suggested that there may be an opportunity for a national plan to control and eliminate PEDV. Levels of detection of M. hyopneumoniae by PCR are at expected levels for this time of year. In the podcast, the SDRS hosts talk with Dr. Brigitte Mason, health assurance veterinarian from Country View Family Farms, about her experience with animal health management, disease management, control, and her advice to the swine industry to better handle animal health interventions.
October 4, 2021
This month’s Domestic Swine Disease Monitoring Report now includes the Ohio Animal Disease and Diagnostic Laboratory (OH ADDL) joining the network. A similar overall level of detection for porcine reproductive and respiratory syndrome virus (PRRSV) and enteric coronavirus occurred when compared to August. Even though the levels of detection were similar, a trend for an increase in detection of PRRSV and porcine epidemic diarrhea virus (PEDV) in the age category wean-to-market was observed in September. In the podcast, the SDRS team welcomes, and hosts talk with, the OH ADDL team.
September 1, 2021
This month’s Domestic Swine Disease Monitoring Report shows that a moderate decrease on the overall porcine reproductive and respiratory syndrome virus (PRRSV) and the PRRSV RFLP 1-4-4 L1C variant strain was observed. Even though a lowering in the detection of enteric coronavirus occurred, similar to July detection for porcine epidemic diarrhea virus (PEDV) in the age category wean-to-market was observed in August. A moderate increase in the detection of M. hyopneumoniae by PCR and signals on the disease diagnosis monitoring were identified. In the podcast, the SDRS hosts talk with Dr. John Deen, University of Minnesota, about his experience on animal health management, control, and how to intervene to improve sows’ longevity. The bonus page provided by Dr. Holtkamp, Iowa State University, brings international benchmarking of key performance indicators in pork production.
August 2, 2021
This month’s Domestic Swine Disease Monitoring Report shows a moderate decrease on the overall detection of porcine reproductive and respiratory syndrome virus (PRRSV) and the PRRSV RFLP 1-4-4 L1C variant strain. As expected by the forecasting models, there was lowering in the detection of enteric coronaviruses and a moderate increase in the detection of M. hyopneumoniae by PCR. There were also signals on the disease diagnosis for Mhp, based on diagnostic codes assigned by veterinary diagnosticians. Signals were also observed E. coli and salmonellas diagnosis. In the podcast, Drs. Trevisan, Magalhaes, and Linhares talk about PRRSV surveillance, management, control, and how to intervene to improve animal health.
July 6, 2021
This month’s Domestic Swine Disease Monitoring Report shows a moderate decrease on the overall PRRS virus detection. However, detection of the PRRSV RFLP 1-4-4 L1C variant strain continues to be very active in the midwestern region, especially in the wean-to-market age category. A new tool to compare RFLP vs. lineage detections has been launched on the SDRS project website (www.fieldepi.org/SDRS). A moderate decrease in detection of PDCoV and PEDV was observed in June. In the podcast, SDRS hosts talk with Dr. Montserat Torremorell about her experience on surveillance of Influenza A, her thoughts on the PRRSV RFLP 1-4-4 L1C variant strain epidemic, and how to intervene to improve animal health.
June 1, 2021
This month’s Domestic Swine Disease Monitoring Report shows that porcine reproductive and respiratory syndrome virus (PRRSV) continues to be very active, especially in wean to market age category. A second wave of detections for the PRRSV RFLP 1-4-4 L1C variant strain was detected. After a couple of months with a continued increase in detection of PDCoV, during May PDCoV detection has had a moderate decrease in the age categories adult/sow farm and wean to market. The advisory group has shared their practical points for preventing a new wave of pathogens activity for the upcoming fall and winter seasons in the report as well. In the podcast, the SDRS hosts talk with Dr. Paul Yeske about his experience on handling the PRRSV RFLP 1-4-4 L1C variant strain since its emergence and in the second wave and how to intervene to improve animal health.
May 4, 2021
This month’s Domestic Swine Disease Monitoring Report shows that porcine reproductive and respiratory syndrome virus (PRRSV) had a moderate increase in detection from March. Porcine delta coronavirus (PDCoV) activity observed since January is explained by increased testing following outbreaks observed in sow farms and viral activity in grow-finish animals. In the SDRS data, a site may have turned positive, kept submitting samples for testing, and obtained positive results over time but information on the incidence level was not known. Higher incidence is assumed because of the positivity in some regions. During the last year, since May 2020, only eight cases tested positive for transmissible gastroenteritis virus (TGEV). Mycoplasma hyopneumoniae was within expected levels for this time of year. At a state level, PRRSV detection was three standard deviations above expected in Nebraska, Ohio, and North Carolina; and PDCoV in Kansas, Oklahoma, Missouri, and North Carolina. In the podcast, the SDRS hosts talk with Dr. Eric Burrough about disease diagnosis coding and trends, and implications for researchers, diagnosticians, and practitioners.
April 5, 2021
This month’s Domestic Swine Disease Monitoring Report shows that porcine reproductive and respiratory syndrome virus (PRRSV) detection was similar to February. A substantial decrease in PRRSV detection in wean-to-market animals was observed. Based on PRRSV detection, ORF-5 sequences, and disease diagnosis reports, and also based on input from the advisory group, the PRRSV 1-4-4 Lineage 1C variant (144 L1Cv) situation is not further spreading or becoming an epidemic. We will continue to monitor the situation closely. March 2021 had a record-high number of cases tested for porcine delta coronavirus (PDCoV) in the US. PDCoV detection was the highest since the PDCoV-epidemic year of 2014. On the other hand, Mycoplasma hyopneumoniae reached the lowest level of detection for the year 2021. At the state level, PRRSV detection was three standard deviations above expected in Nebraska and Ohio. PDCoV was three standard deviations above expected in Kansas, Oklahoma, Missouri, and North Carolina. In a recorded interview, Drs. Trevisan, Magalhaes, and Linhares reflect on the main SDRS findings so far in 2021 and educate the users on how to use the newly launched disease diagnosis web-tool.
March 2, 2021
This month’s Domestic Swine Disease Monitoring Report shows that porcine reproductive and respiratory syndrome (PRRS) virus detection was similar to January 2021, with a small decrease in positivity in sow herds, but increase in wean-to-market animals. PRRSV RFLP 1-4-4 Lineage 1C variant continues to be associated with severe clinical signs, especially in grow-finish sites. There was a moderate increase in detection for porcine deltacoronavirus (PDCoV) in wean-to-market animals. That increase was regional. There was a moderate decrease in Mycoplasma hyopneumoniae. At a state level, PRRS virus detection was three standard deviations above expected in Nebraska, Ohio, and Indiana; and PDCoV was three standard deviations above expected in Kansas, Oklahoma, and North Carolina. The SDRS hosts talk with Dr. Cesar Corzo (Morrison Swine Health Monitoring Project) about his observations on recent pathogen activity in the US swine herd.
February 4, 2021
This month’s Domestic Swine Disease Monitoring Report shows that porcine reproductive and respiratory syndrome virus (PRRSV) detection had a moderate decrease from December 2020 to January 2021, mostly contributed by a substantial decrease in detection in wean-to-market animals. There was a moderate increase in detection for porcine deltacoronavirus (PDCoV) in adult/sow farm animals. There was a moderate decrease in Mycoplasma hyopneumoniae. At a state level, PDCoV detection was three standard deviations above expected in Kansas and Oklahoma. Drs. Trevisan, Magalhaes, and Linhares reflect on the main findings and contributions of the SDRS to the swine industry in 2020, and leak some of what is cooking for 2021 in the related podcast.
January 4, 2021
This month’s Domestic Swine Disease Monitoring Report shows that porcine reproductive and respiratory syndrome virus (PRRSV) detection was on the upper boundaries of the forecasted model at the end of November and beginning of December. There was a moderate increase in detection for porcine epidemic diarrhea virus (PEDV) in adult/sow farms, and porcine deltacoronavirus (PDCoV) in wean-to-market animals. Mycoplasma hyopneumoniae detection was similar to November. At a state level, PRRSV detection was three standard deviations above expected in Minnesota, Iowa, South Dakota, Nebraska, Missouri, and Indiana, PEDV in Illinois, PDCoV in Oklahoma and Illinois. The SDRS hosts talk with Dr. Deb Murray (New Fashion Pork) about her experiences using and applying veterinary diagnostic data for disease management and control in this month’s podcast.
December 1, 2020
This month’s Domestic Swine Disease Monitoring Report shows porcine reproductive and respiratory syndrome virus (PRRSV) detection was on the upper boundaries of the forecasted model at the end of October and beginning of November, mostly from a substantial increase in detection from wean-to-market animals. During November, a moderate increase in PRRSV detection in the age category adult sow farm was observed. The October detection levels for porcine epidemic diarrhea virus (PEDV), porcine deltacoronavirus (PDCoV), and Mycoplasma hyopneumoniae (MHP) were similar from October. At a state level, PRRSV detection was three standard deviations above expected in Minnesota, Iowa, South Dakota, Nebraska, Missouri, and Indiana. A seasonal increase in the number of disease diagnosis for PRRSV, Influenza A, S.suis, G.parasuis, B. bronchiseptica, and P. multocida was detected. In the podcast, the SDRS hosts talk with Dr. Clayton Johnson, of Carthage Veterinary Services, about his experiences in using and applying veterinary diagnostic data for disease management and control.
November 3, 2020
This month’s Domestic Swine Disease Monitoring Report shows a moderate increase in case positivity for porcine reproductive and respiratory syndrome virus (PRRSV), mostly contributed by a substantial increase in detection from wean-to-market animals. The October detection levels for porcine epidemic diarrhea virus (PEDV), porcine deltacoronavirus (PDCoV), and Mycoplasma hyopneumoniae were similar from September. At a state level, PRRSV detection was three standard deviations above expected in Minnesota, Iowa, South Dakota, Nebraska, Missouri, Illinois, and Indiana. In the podcast, the SDRS hosts talk with Dr. Tara Donovan about her experiences in leveraging veterinary diagnostic and swine production information to support data-driven decisions to improve further the health, welfare, and productivity of swine populations.
September 1, 2020
This month’s Domestic Swine Disease Monitoring Report shows a similar overall case positivity for porcine reproductive and respiratory syndrome virus (PRRSV), porcine epidemic diarrhea virus (PEDV), and porcine deltacoronavirus (PDCoV) cases in August compared to July. Detection for these agents was within expected parameters for this time of the year. Overall, Mycoplasma hyopneumoniae is following an expected trend of increased detection. At the state level, detection of PRRSV was three standard deviations above expected in Missouri (MO). In the podcast, the SDRS hosts talk with Dr. Derald Holtkamp about strategies to keep disease activity low. They also discuss the economics of disease management and the value of year around biosecurity practices.
August 4, 2020
This month’s Domestic Swine Disease Monitoring Report shows a moderate decrease of porcine reproductive and respiratory syndrome virus (PRRSV) cases in July compared to June, down substantially in wean-to-market category. Porcine epidemic diarrhea virus (PEDV)-positive cases were down moderately in July compared to June as well and within expected boundaries for this time of year. Detection of porcine delta coronoavirus (PDCoV) was also within the expected boundaries for this time of year. Mycoplasma hyopneumoniae (MHP)-positive cases in July were similar June and also within expected boundaries.
July 7, 2020
In the July Domestic Swine Disease Monitoring Report, we learn porcine reproductive and respiratory (PRRS) virus cases dropped in June compared to May. Overall detection of PRRSV-positive cases was in the upper boundaries of the forecasted levels for the first three weeks of June. The overall percentage of porcine epidemic diarrhea virus (PEDV) RNA-positive cases in June also decreased compared to May and were within expected boundaries of forecasted levels for this time of year. Porcine delta coronoavirus (PDCoV) cases were just slightly lower in June compared to May and there was one positive case of TGEV RNA in June 2020. Mycoplasma hyopneumoniae-positive cases in June were within the forecasted levels for this time of year.
June 2, 2020
In the June Domestic Swine Disease Monitoring Report, we learn the overall percentage of porcine reproductive and respiratory syndrome virus (PRRSV) positive cases in May was similar to the previous month. Wean-to-market cases were slightly up. Comparing January – April 2020 to the same four months of 2019, the number of PRRSV cases was up 6.49%. The overall percentage of porcine epidemic diarrhea virus (PEDV) RNA-positive cases in May was down compared to April, however, this was not the case for the adult/sow category where detection remained similar to the prior month. The overall percentage of porcine delta coronavirus (PDCoV) positive cases in May was down compared to April as well and within forecasted levels for this time of year. Mycoplasma hyopneumoniae (MHP) positive cases in May were within the forecasted levels, also.
May 5, 2020
Porcine reproductive and respiratory syndrome virus positive cases in April were down over March per the most recent Domestic Swine Disease Monitoring Report (DSDMR) and within the forecasted levels for this time of the year. The DSDMR advisory group pointed out COVID-19-related packing plant shutdowns have led to the retention of animals in the field and caused negative market impact. They also noted this may affect the implementation of health interventions, as well as cause disruptions of pigs and people flows. Altogether, these factors can lead to increased pressure of pathogen infection in the field in the near term. Porcine epidemic diarrhea virus (PEDV) and porcine deltacorona virus (PDCoV) cases were also down in April compared to March. Both were in forecasted levels for this time of year. The overall percentage of Mycoplasma hyopneumoniae positive cases in April was within the forecasted levels, down from March levels.
March 4, 2020
In this month’s Domestic Swine Disease Monitoring Report, the overall percentage of porcine reproductive and respiratory syndrome (PRRS)-positive cases in February were down from January in all age groups and sample types. It was noted genetic variability of PRRSV is still increasing. Porcine epidemic diarrhea virus (PEDV) RNA-positive cases in February were up from January in Iowa, Illinois, and Minnesota. The overall percentage of porcine deltacorona virus (PDCoV)-positive cases was down from January. Both PEDV and PDCoV positive cases are within forecasted levels for this time of year. Mycoplasma hyopneumoniae (MHP)-positive cases in February were down from January in all age categories. MHP detection also followed the expected predicted decrease for this period of the year.
February 5, 2020
In the February report, we learn porcine reproductive and respiratory syndrome (PRRS) positive cases reported in January were down compared to December in all age groups and sample types. This data corresponds to the Morrison’s Swine Health Monitoring Program which reports a relatively low PRRS incidence in sow farms compared to previous years. The overall percentage of porcine epidemic diarrhea virus (PEDV) RNA positive cases in January was slightly up from December with increased detection observed in cases from Minnesota and North Carolina. The overall percentage of porcine deltacorona virus (PDCoV) positive cases in January was slightly down from December. Both PEDV and PDCoV RNA positive cases are within forecasted levels for this time of year. The overall percentage of Mycoplasma hyopneumoniae positive cases in January was slightly up from December, mostly driven by samples with unknown information for age category.
December 3, 2019
In the December report, the percentage of positive porcine reproductive and respiratory syndromve virus (PRRSV) cases in November was 26.15%, up from 22.65% in October, with increased detection in all age categories. The increase follows the predicted expectation for the period. Porcine epidemic diarrhea virus (PEDV) overall positive cases in November were at 13.97%, up from 10.82% in October. The increased detection of PEDV RNA was above expected, mostly driven by wean-to-market animals. The overall porcine deltacorona virus (PDCoV) percentage of positive cases in November was at 4.18%, up from 2.13% in October. There was a signal for increased detection of M. hyopneumoniae above expected in November. Details on these and other monitoring results are included in the full report.
November 5, 2019
Porcine reproductive and respiratory syndrome (PRRS) positive cases were up in October over September in all age categories, per seasonal expectations. Porcine epidemic diarrhea virus (PEDV) and porcine delta corona virus (PDCoV) detection in October also increased as expected. Mycoplasma hyopneumoniae (MHP) positive cases were slightly higher than expected for October. From September 1 to October 19, there was an increased number of cases diagnosed with Influenza virus A at the Iowa State University Veterinary Diagnostic Lab, though it is not associated with more severity of the disease.
May 7, 2019
The Swine Health Information Center’s Domestic Swine Disease Monitoring Report for May 2019 shows PRRSV activity remained within the predicted values for 2019 to date. The level of detection of PEDV by PCR was within expected values for April with a 3 percentage point drop in positive results from March to April this year. PDCoV detection level was above expected in mid-April and Monitoring Report advisors said some sow farms experiencing outbreaks had clinical signs of the virus. Streptoccoccus suis (S. suis) continues to be the major agent detected on CNS tissue, however, in March and April there were an increased number of Pestivirus, Porcine Sapelovirus, and salt intoxication detections on CNS tissue when compared to the same time frame in 2018 and 2017. There was also an increase in detection of the following respiratory insultants this spring compared to 2018: Haemophilus parasuis, Actinobacillus pleuropneumoniae, Pasteurella multocida, and Mycoplasma hyorhinis.
February 4, 2019
The Swine Health Information Center’s Domestic Swine Disease Monitoring Report shows both porcine reproductive and respiratory virus (PRRSV) and porcine epidemic diarrhea virus (PED) are being reported at expected levels. PRRSV has been stable since October 2018. And while PED has been at expected levels, there has been a slight increase in reported cases over the last three months. There was a high detection of porcine deltacoronavirus in the second week of January 2019. And porcine circoviruses (PCV2 and 3 combined) and Bordetella bronchiseptica have both been diagnosed at higher levels than the previous two winter seasons.
January 9, 2019
The Swine Health Information Center’s Domestic Swine Disease Monitoring Report this week shows expected activity in December. Data for the report is collected from the Veterinary Diagnostic Labs at Iowa State, South Dakota State, and Kansas State Universities as well as the University of Minnesota. Porcine reproductive and respiratory syndrome detection decreased in December after two months of increase and remained in the predicted range the last three weeks of 2018. Porcine epidemic diarrhea virus detection by PCR also continues to meet expected values which means an increase in activity for the same time frame based on previous years’ reports. Streptoccocus suis remains the major agent causing CNS. For the beginning of 2019 winter, porcine circovirus had a greater percentage of detection, but similar number of cases, when compared with full winter season of previous years.
December 4, 2018
Few monitored diseases were above expected or predicted level in the November domestic swine disease report from the Swine Health Information Center (SHIC). Porcine reproductive and respiratory virus was one of those above expected levels. A trend to increasing positivity in adult/sow and unknown categories was noted. There was a spike in porcine delta corona virus PCR positive tests but only a limited number of transmissible gastro enteritis cases. Accession ID cases investigated for central nervous system (CNS) issues rose with nearly 9 percent more in November 2018 than the same month in 2017. The number of cases per agent have similar distribution this fall, compared to the same season of previous years. Streptoccocus suis is still the major agent causing CNS. Detection of influenza A (IAV) as a single agent was less frequently detected in 2018 than previous Fall seasons of 2017 and 2016.
May 2, 2018
There has been a recent increase in cases testing positive for PRRS virus by rRT-PCR. The domestic disease monitoring project advisory group reached consensus that this is possibly due to a) increased use of processing fluid to monitor sow herds, and b) increased PRRS virus activity in grow/finish pigs. There has been a significant increase of processing fluids to test for PRRS virus on sow farms. This specimen was not reported in previous years, and in 2018 accounted for more than 5 percent of total the submissions at the participating VDLs for PRRS rRT-PCR testing.
Deltacoronavirus (PDCoV) activity continues high relative to predicted values based on previous years. There was a 19 percent increase in the number of Central Nervous System (CNS) cases in 2017 compared to 2016. Partial data for spring 2018 indicates a 30 to 40 percent increase in CNS disease compared to spring months of 2017. Streptoccocus suis has been the main pathogen associated with CNS disease.
The May Swine Health Information Center-funded Domestic Swine Disease Monitoring Report PRRS data now includes data from the Iowa State University and University of Minnesota veterinary diagnostic labs. Work to integrate other disease information and laboratories into the report continues.
March 1 ,2018
The Swine Health Information Center (SHIC) has posted the first monthly domestic swine disease monitoring report. The report is the result of the veterinary diagnostic lab (VDL) data standardization project SHIC supported. Beginning with monitoring of PEDv, PDCoV, and PRRS, the model describes dynamics of disease detection by pathogen over time, specimen, age group, and geographical space. Additional diseases will be included as the program is refined.
The domestic monitoring report is a SHIC-funded, veterinary diagnostic laboratory collaborative project. An advisory group has been formed to help give context to the data and interpret it. The goal is to aggregate swine diagnostic data from participating reporting VDLs then present it in an intuitive format via shared reports and web dashboards. The report uses data from VDL cases with molecular tests (PCR-based assays and virus genotyping) for these viruses. For this first report, all data was from the Iowa State University Veterinary Diagnostic Laboratory. The University of Minnesota VDL will incorporate their data beginning with the next report.
To implement infectious disease control and management, precise, science-based information is required. By funding this project, SHIC leads the industry toward better swine health information to positively impact the long-term sustainability of pork production. The near real-time information on swine disease made available by this system will enable better, faster, and more effective response to endemic or foreign infectious diseases. The result is a stronger, more vibrant U.S. pork industry.
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