Brazil reports cowpox case in Mato Grosso farmer
A farmer from São José dos Quatro Marcos, Mato Grosso, Brazil is the first case of cowpox in a person confirmed this year, according to Office of Agricultural Defense of Mato Grosso in a Globo.com report this week (computer translated).
Three of animals on the farm are also infected with the virus. An Animal Disease Control representative for the state noted that the property was closed and milk production was suspended. In addition, some 70 neighboring properties were inspected and no other cowpox cases were discovered.
According to the Global Infectious Disease and Epidemiology Network (GIDEON), cowpox is endemic in Brazil with few human cases reported each year.
According to the Merck Veterinary Manual, cowpox is a mild, eruptive disease of dairy cows, lesions are seen on the udder and teats. Although once common, cowpox is now extremely rare and reported primarily in western Europe. The virus of cowpox is closely related antigenically to vaccinia and smallpox viruses. For more infectious disease news and information, visit and “like” the Infectious Disease News Facebook page
The disease spreads by contact during milking. After an incubation period of 3–7 days, during which cows may be mildly febrile, papules appear on the teats and udder. Vesicles may not be evident or may rupture readily, leaving raw, ulcerated areas that form scabs. Lesions heal within 1 mo. Most cows in a milking herd may become affected. Milkers may develop fever and have lesions on the hands, arms, or face. Occasionally, cowpox in people can cause generalized disease, and fatalities have been recorded.
Related: Brazil reports seven imported chikungunya cases in past week
Dear Colleagues,
In agreement with Dr. Borges, Cowpox virus is not endemic in Brazil. The GIDEON is not the best reference for Poxvirus infections. Please search Centers for Disease Control and Prevention (CDC), Atlanta. They are the best reference in this case.
Felipe Lopes de Assis
Msc in Microbiology
PhD student in Virology field – Currently working with Poxvirus research in Brazil.
Cowpox is not endemic in Brazil, Bovine Vaccinia is. To call this outbreak a Cowpox occurence one should do molecular tests and demonstrate it is about Cowpox virus and not Vaccinia virus. The image shown from CDC induces us to think these are the lesions found on infected humana from this specific case, which are not. I advise you to correct this text with the help of a Poxvirus expert in order to stop the dissemination of wrong information. CDC has great references such as Dr. Mary Reynolds and Dr. Andrea McCollum from Pox and Rabies branch.
Iara Borges
Veterinarian
PhD in Microbiology.
Brazil
Dr. Borges,
According to GIDEON, cowpox is endemic in Brazil.The ECDC also noted this reference. In addition, nowhere did I call this incident an outbreak.
Thanks for your comment,
Robert
Sr Herriman,
Maybe the correction of these information is not of your interest. But We, virologists, have a commitment with the science! You just can’t say that the Mato Grosso’s episode is resulting of Cowpox virus infection. No genetic study has been performed in this case, and just this can indicate the causative viral agent. The current poxvirus circulating in Brazil is Vaccinia virus, the causative agent of bovine vaccinia disease, which is correctly described in your text. The Vaccinia virus has been isolated and featured by biological and molecular methods for 20 years in Brazil. During these 20 years, no Cowpox virus has been detected in Brazil. So, be careful in relaying such information.
Felipe Assis
At this point that is what is being reported. We will be happy to publish any/all updates as the details are validated or disproved. Please keep us posted if you get the news – Thanks again for supporting The Dispatch
Hi Felipe,
I understand your concern; however, we are a news organization and I cited my sources as Globo.com who cite Office of Agricultural Defense of Mato Grosso and the European Centre for Disease Prevention and Control (ECDC)who report it in their weekly communicable diseases threat report. http://www.ecdc.europa.eu/en/publications/Publications/communicable-disease-threats-report-14-jun-2014.pdf
Thanks
Robert