Tuesday, June 11, 2024

USDA Adds 3 Dozen Additional Mice To H5N1 Infected List


A week ago, in USDA Adds House Mouse To Mammals Affected by H5N1, 11 infections of a new species Mus musculus (the common house mouse) - all from a single county (Roosevelt) in New Mexico - were added to the USDA's list. 

While no details were provided as to where these mice were sampled, yesterday WOAH's WAHIS dashboard carried a report stating that `Wild house mice (Mus musculus) and wild red fox (Vulpes vulpes) collected from an HPAI affected poultry premises.'

While there was speculation last week that these mice came from a dairy farm, and were likely infected by consuming contaminated milk, the (above) disclosure that they were collected on a poultry farm adds an intriguing twist.

Today, the USDA updated their list, adding 3 dozen more mice to their list, bringing the total to 47.  

The collection dates range from May 6th to May 12th.  There are no other details provided.  Since this is reportedly a poultry operation, and not a dairy, it is unclear what genotype of the virus is involved. 

Today's report also includes 3 more reports of infections in domestic cats.

Hopefully we'll get some additional details sooner rather than later.