Blue fox are the most common fur animal farmed in Finland, and officials say wild birds are the likely source of the virus.
Though the virus hasn't shifted its preference to mammalian cells, scientists see some changes that could enhance replication and allow binding to human-like receptors.
The Florida Department of Health reported 2 more local malaria infections, raising its total to 6.
The overall threat remains moderate and is similar to earlier viruses that belong to the same clade.
Scientists say they found the virus in one of five submitted chicken meat samples that the cats ate.
Testing suggests viruses found in cats in Poland are related to those found in the country's poultry and wild birds.
Following Brazil's first detection of high-path H5N1 avian flu in wild birds in early May, the country confirms its first outbreak involving poultry.
Preliminary tests show the virus in cats is different from the one infecting gulls in the country.
The FDA warns consumers and retailers in 3 states about raw oysters imported from South Korea that may be contaminated with norovirus.
The case marks the third in mainland China in the past 6 months.