January Domestic Swine Disease Monitoring Report Now Available

January 10, 2020 — 

The Swine Health Information Center's (SHIC) January Domestic Swine Disease Monitoring Report is available. The overall percentage of PRRSV positive cases in December for adult/sow farms was 24.99%. This level of detection for the adult/sow farm is the highest since 2013 for the months of November and December. After four months of consecutive increase in percentage of PRRS positive results for wean to market cases, there was a decrease in the percentage of positive results in December. The number of PRRSV positive cases from December 1 to 28 was above expected in Minnesota and Nebraska. The overall percentage of PEDV RNA positive cases in December was 15.64%. Increased detection of PEDV RNA above expected levels December 1 to 14 was mostly driven by wean-to-market cases, primarily from Iowa. The percentage of PEDV RNA positive cases for adult/sow farm cases was 8.46% in December, the lowest historical December level for adult/sow farm. The overall percentage of PDCoV RNA positive cases in December was 4.59%. Increased detection of PDCoV RNA above expectations December 1 to 22 was mostly driven by wean-to-market animals, primarily from Iowa. There were four positive cases for TGEV RNA over a total of 2,802 cases tested in December. All positive cases were detected in Iowa. The level of detection of Mycoplasma hyopneumoniae during December followed the expected predicted decrease in detection for this period of the year. Read the entire report here.

View the full report dashboards in the online portal. No login required.

What is the Swine Disease Reporting System (SDRS)?

SHIC-funded, veterinary diagnostic laboratories (VDLs) collaborative project, with goal to aggregate swine diagnostic data from participating reporting VDLs, and report in an intuitive format (web dashboards), describing dynamics of disease detection by pathogen or disease syndrome over time, specimen, age group, and geographical space. For this report, data is from the Iowa State University VDL and South Dakota State University ADRDL. University of Minnesota VDL and Kansas State University VDL. Specifically, for PRRSV RFLP data, and syndromic information the results are from Iowa State University VDL. For all "2019 predictive graphs," the expected value was calculated using a statistical model that considers the results from three previous years. The intent of the model is not to compare the recent data (2019) to individual weeks of previous years. The intent is to estimate expected levels of percent positive cases based on patterns observed in the past data, and define if observed percentage positive values are above or below the expected based on historic trends.