The goal of the Morrison Swine Health Monitoring Project is to monitor Porcine Reproductive and Respiratory Syndrome virus, Porcine Epidemic Diarrhea virus and Senecavirus A statuses of a population of US sow farms, enrolled voluntarily in the program. The MSHMP is funded by the USDA, the Pork Checkoff and the Swine Health Information Center (SHIC).
2022
2022
January
- Updated epidemiological curve of cases associated with the new Lineage 1C RFLP1-4-4 variant (pdf)
- Porcine Reproductive and Respiratory Syndrome Surveillance in Breeding Herds and Nurseries Using Tongue Tips from Dead Animals (pdf)
- Morrison Swine Health Monitoring Project (MSHMP) 2021 Summary (pdf)
- Porcine reproductive and respiratory syndrome virus 2 (PRRSV-2) genetic diversity and occurrence of wild type and vaccine-like strains in the United States swine industry (pdf)
February
- Environmental contamination assessment in farms undergoing an outbreak with PRRS 1-4-4 Lineage 1C (pdf)
- Summary: A putative PCV3-associated disease in piglets from Southern Brazil (pdf)
- Experimental pig study confirms the high virulence of the recently emerged PRRSV 1-4-4 L1C variant strain (pdf)
March
- PRRS RFLP, what is it and how we use them? (pdf)
- What are PRRS lineages? (pdf)
- PRRS 2021-2022 Exponentially Weighted Moving Average (EWMA) by State (pdf)
- A survey to investigate the implementation methods of rotavirus ice cubes on swine farms (pdf)
April
- Tracing the evolutionary history of the novel PRRSV-2 L1C-1-4-4 variant (pdf)
- Summary: Superficial Inguinal Lymph Nodes for Screening Dead Pigs for African Swine Fever (pdf)
- Prevalence comparison among different MSHMP cohorts (pdf)
May
- Efficacy of “Tooth Extraction” for ASFV elimination and relevance of point of care testing for ASFV to the field (pdf)
- Modeling between-farm transmission dynamics of porcine epidemic diarrhea virus: characterizing the dominant transmission routes (pdf)
June
- Evidence of influenza A infection and risk of transmission between pigs and farmworkers (pdf)
- Virulence associated factors, antimicrobial resistance, and in silico serotyping of Streptococcus suis (pdf)
- A Review of MSHMP’s Report PED Chart 3: PED Outbreak History (pdf)
July
- Summary: Experimental Infection of Domestic Pigs with an African Swine Fever Virus Field Strain Isolated in 2021 from the Dominican Republic (pdf)
- Effect of Killed PRRSV Vaccine on Gut Microbiota Diversity in Pigs (pdf)
- Comparative survival of different strains of porcine reproductive and respiratory syndrome virus (pdf)
- Morrison Swine Health Monitoring Project Incidence Year 2021 / 2022 Annual Summary (pdf)
- Outbreak investigations of Actinobacillus pleuropneumoniae serotype 15 in central Iowa in the winter of 2021-22 (pdf)
August
- Measures of disease occurrence review (pdf)
- Is the PRRSV isolate obtained in cell culture the same as the virus present in the original clinical sample? (pdf)
- Description of a new clade within subtype 1 of Betaarterivirus suid 1 (PRRSV1) causing (pdf)
September
- Evaluating the Efficacy of Boot Baths with Wet and Dry Disinfectants for Porcine Epidemic Diarrhea Virus and Porcine Reproductive and Respiratory Syndrome Virus (pdf)
- Tongue tip fluid (TTF): A welfare friendly directed population-based monitoring technique (pdf)
- Summary: Implementation of piglet castration under inhalation anaesthesia on farrowing farms (pdf)
- Welcoming Dr. Xiaomei Yue to the MSHMP Group (pdf)
October
- Summary of: Antimicrobial use in lactating sows, piglets, nursery, and grower-finisher pigs on swine farms in Ontario, Canada during 2017-2018 (pdf)
- Summary: Evaluation of the Impact of Antimicrobial Use Protocols in Porcine Reproductive and Respiratory Syndrome Virus-Infected Swine on Phenotypic Antimicrobial Resistance Patterns (pdf)
November
- The role of feed in sustainable pork production: How feeding programs affect environmental impacts of pork production - Part 1 (pdf)
- The role of feed in sustainable pork production: How feeding programs affect environmental impacts of pork production - Part 2 (pdf)
- Summary: The impacts of viral infection and subsequent antimicrobials on the microbiome-resistome of growing pigs (pdf)
- Porcine reproductive and respiratory syndrome prevalence and processing fluids use for diagnosis in United States breeding herds (pdf)
December
- When the farm is exposed to a critical level of PRRSv in air, the probability of having an outbreak is four times higher for non-filtered farms: A retrospective analysis using wind data (pdf)
- Comparative adsorption of Porcine Reproductive and Respiratory Syndrome Virus strains to Minnesota soils (pdf)
- Evaluating the economic impact of an autogenous influenza vaccine in the finishing phase with a pre-post analysis utilizing closeout data (pdf)
2021
2021
January
- Assessment of the Impact of the Recombinant Porcine (pdf) Reproductive and Respiratory Syndrome Virus Horsens Strain on the Reproductive Performance in Pregnant Sows (pdf)
- Morrison Swine Health Monitoring Project (MSHMP) 2020 Summary (pdf)
- Understanding Sow Mortality: Part 1 (pdf)
- Understanding Sow Mortality: Part 2 (pdf)
February
- Summary of: Susceptibility of domestic swine to experimental infection with severe acute respiratory syndrome coronavirus 2 (pdf)
- Can pigs get COVID-19 and transmit the virus to humans? (pdf)
- Newly emerging PRRSV Lineage 1C variant nomenclature (pdf)
March
- Stability of African Swine Fever Virus in soil and options to mitigate the potential transmission risk (pdf)
- Porcine reproductive and respiratory syndrome virus dissemination across pig production systems in the United States (pdf)
- Antimicrobial use in wean to market pigs in the United States assessed via voluntary sharing of proprietary data (pdf)
- Turnover events of animal caretakers and productivity in Ohio swine farms (pdf)
April
May
- Modelling the transmission and vaccination strategy for porcine reproductive and respiratory syndrome virus (pdf)
- Preliminary analysis of whether mosquitoes can carry and transmit African swine fever (pdf)
June
- Assessing Senecavirus A shedding and transmission in growing pig populations (pdf)
- PRRS incidence in status 4 sow farms (pdf)
- Breeding herd Senecavirus A infection: understanding its persistence (pdf)
- Ability of different matrices to transmit African swine fever virus - Part 1 (pdf)
July
- Ability of different matrices to transmit African swine fever virus - Part 2 (pdf)
- Updated epidemiological curve of cases associated with the new Lineage 1C RFLP1-4-4 (pdf)
- Morrison Swine Health Monitoring Project Incidence Year 2020 / 2021 Annual Summary (pdf)
- Evaluation of oral fluid as an aggregate sample for early detection of African swine fever virus using four independent pen-based experimental studies (pdf)
August
- African Swine Fever Detected in the Dominican Republic for the first time in ~40 years! (pdf)
- MSHMP data collection update 2020-2021 (pdf)
- Phylogenetic Structure and Sequential Dominance of Sub-Lineages of PRRSV Type-2 Lineage 1 in the United States (pdf)
- Average time sites stay in a naïve PRRSV status: Preliminary Results (pdf)
September
- An Analysis of Select Swine Feed Ingredients and Pork Products (pdf) Imported into the US from African Swine Fever Virus (ASFV) Affected Countries (pdf)
- Enhanced Passive Surveillance for African swine fever and Classical swine fever (pdf)
- Assessing Senecavirus A shedding and transmission in growing pig populations (pdf)
October
- Case Report: Report on the First African Swine Fever Case in Greece (pdf)
- PRRSV 144 L1C: A Rapid Response to a National Crisis (pdf)
- Post-epidemic dynamics of PEDV in the United States: Current trends and patterns (pdf)
- Updated epidemiological curve of cases associated with the new Lineage 1C RFLP 1-4-4 variant (pdf)
November
- Investigation of ultraviolet C (UVC) doses in homemade UVC chambers with items commonly used on swine farms (pdf)
- Modelling PRRSV dissemination dynamics to quantify the contribution of multiple modes of transmission (pdf)
December
- Evaluating the use of geofencing under field conditions (pdf)
- Overview of Porcine Deltacoronavirus Occurrence in the United States Breeding Herds (pdf)
- How many PRRSV variants can we find in a swine farm in a sampling event? (pdf)
- Rethinking the uncertainty of African swine fever virus contamination in feed ingredients and risk of introduction into the United States (pdf)
- Mitigating the risk of African Swine Fever virus entry into boar studs in the USA (pdf)
- Chart 3 description: PRRS incidence rate by status at break (pdf)