In this recent publication from the Journal of Veterinary Diagnostic Investigation, Dr. Matt Sturos from the UMN Veterinary Diagnostic Lab shares a case report establishing the shedding of Senecavirus A through boar semen. This study highlights the importance of considering semen as a potential biosecurity risk in the case of a Senecavirus A outbreak.
Continue reading “Persistence and shedding of Senecavirus A in naturally infected boars”Tag: boar
Mitigating the risk of African Swine Fever virus entry into boar studs in the USA
This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.
This week the Secure Food Systems Team at the University of Minnesota shares information on a proactive risk assessment regarding the introduction of ASF via boar studs. To learn more about risk assessment regarding ASF introduction via feed, read our Science Page from last week.
Continue reading “Mitigating the risk of African Swine Fever virus entry into boar studs in the USA”Senecavirus A publications in English and in Spanish
A fair part of our audience originates from Spanish-speaking countries. Our researchers appreciate your support and your interest in our work. Recently, Drs. Matthew Sturos and Fabio Vannucci published an article in the journal Albeitar regarding Senecavirus A and its tropism for reproductive organs.
A quick summary of the article that can be found online in open access:
Se trata de un virus patógeno emergente en el ganado porcino. En este artículo se proporciona información general sobre el virus y el conocimiento actual de la patogénesis y las características de la enfermedad.
For our English-speaking readers, we recommend a previous publication on this page also by Dr. Sturos called Natural and experimentally-induced Senecavirus A infections in boars.
Happy reading!
Science Page: Natural and experimentally-induced Senecavirus A infections in boars
This is our Friday rubric: every week a new Science Page from the Bob Morrison’s Swine Health Monitoring Project. The previous editions of the science page are available on our website.
This week, we are sharing a study from Dr. Matt Sturos from the University of Minnesota, Veterinary Diagnostic Laboratory regarding Senecavirus A in boars.
Key points
- Naturally-infected boars have been documented to shed Senecavirus A (SVA) RNA in semen for up to three months after exhibiting vesicular disease.
- Experimentally-infected boars shed SVA RNA in semen for up to three weeks post-inoculation.
- The majority of experimentally-infected boars did not exhibit clinical signs or develop apparent lesions.
“This update shows that SVA RNA is shed in semen from both naturally-infected and experimentally-inoculated boars. The prolonged shedding of viral RNA in semen and the presence of SVA RNA in the testes and tonsils of the naturally-infected boars for up to three months are concerning findings and raises the possibility of persistent infection in boars. While the duration of shedding in semen for the experimentally-infected boars was considerably shorter than for the naturally-infected boars, the fact that all contemporary-strain boars had PCR-positive semen on at least one collection indicate that shedding in semen is a repeatable phenomenon and shedding occurred in some boars which did not exhibit clinical signs or develop vesicular lesions. It is currently unknown whether semen from infected boars can serve as a source of infection if used to inseminate susceptible females.”