The USDA Food Safety and Inspection Service (FSIS) announced results from testing 30 samples of ground beef on Thursday, showing that all were negative for H5N1.
The agency made the announcement on its website, available for review here.
USDA-FSIS said it collected the samples from “states with dairy cattle herds that had tested positive for the H5N1 influenza virus at the time of sample collection. The samples were sent to APHIS’ National Veterinary Services Laboratories (NVSL) for PCR testing.”
PCR stands for polymerase chain reaction. Such testing is done to identify the presence or absence of human pathogens in food. Common pathogens routinely tested for in food include E. coli and Salmonella, for instance. In the ground beef study, no virus particles were found to be present.
The USDA said it is working on two additional beef safety studies. According to the information posted online, these include:
1. Beef muscle sampling of cull dairy cows condemned at select FSIS-inspected slaughter facilities: FSIS is currently collecting muscle samples at FSIS-inspected slaughter facilities of cull dairy cattle that have been condemned for systemic pathologies. The samples will be analyzed by APHIS using PCR to determine presence of viral particles. The results are forthcoming and will be posted as soon as they become available.
2. Ground beef cooking study: ARS will be conducting a beef cooking study and will be using a virus surrogate in ground beef and cooking it at different temperatures to determine log-reduction of the virus. The results will be posted as soon as they become available.
The agency said the results from both studies will be posted as soon as they become available.
