Milk and nasal swab samples from sick cattle on a minimum of two dairy farms in Texas and two in Kansas have examined optimistic for hen flu, in keeping with federal and state officers.Companies are shifting shortly to conduct extra testing for the sickness — referred to as extremely pathogenic avian influenza, or HPAI — the U.S. Division of Agriculture stated in a information launch Monday.Cattle are exhibiting flu-like signs and lactating discolored milk, Texas state officers stated. Wild migratory birds are in all probability the supply of an infection, federal officers added, pointing to studies that farms have discovered lifeless wild birds on their properties.The announcement comes after Minnesota officers reported the primary an infection of avian flu amongst livestock in america final week, when a juvenile goat residing on a farm with contaminated poultry examined optimistic.The infections amongst cattle pose minimal danger to human meals security or milk provide and costs, officers stated. Milk from sick cattle is being diverted or destroyed. Pasteurization — a heating remedy that kills pathogens — is required for milk concerned in interstate commerce, drastically lowering the likelihood that contaminated milk enters the meals provide, they added.The milk samples that examined optimistic for hen flu had been unpasteurized, in keeping with federal officers.“There is no such thing as a menace to the general public and there will probably be no provide shortages,” Texas Agriculture Commissioner Sid Miller stated in a information launch. “No contaminated milk is understood to have entered the meals chain; it has all been dumped. Within the uncommon occasion that some affected milk enters the meals chain, the pasteurization course of will kill the virus.”Officers have lengthy cautioned customers to keep away from uncooked milk, or unpasteurized milk, which may be bought inside some states, together with Texas and Kansas. The Facilities for Illness Management and Prevention calls uncooked milk “one of many riskiest meals” and says it’s “linked to a wide range of foodborne diseases.”Texas requires dairy farms promoting uncooked milk to have it examined each three months. Kansas requires uncooked milk gross sales to “happen on the farm the place it was produced,” whereas any promoting and any containers should plainly state that it’s uncooked milk.The lack of milk from symptomatic cows is simply too restricted to have a significant impression on milk provide, federal officers stated, that means “there must be no impression on the worth of milk or different dairy merchandise.”Federal and state officers are investigating primarily older cows in Texas, Kansas and New Mexico. Iowa officers are additionally “actively monitoring this evolving scenario.”Not like outbreaks amongst poultry, hen flu infections amongst mammals are anticipated to not require huge culling efforts, officers stated. In uncommon instances, avian flu has jumped from birds to people, most notably throughout an avian influenza outbreak in Hong Kong in 1997, in keeping with the World Well being Group.Brian Hoefs, a veterinarian and the chief director of the Minnesota Board of Animal Well being, stated final week that the child goat’s hen flu an infection “highlights the potential of the virus infecting different animals on farms with a number of species.” “Fortunately, analysis to-date has proven mammals look like dead-end hosts, which implies they’re unlikely to unfold HPAI additional,” he added on the time.Miller stated he doesn’t count on a “have to depopulate dairy herds,” and that the affected cattle are “anticipated to completely get well.”