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“Tamiflu works for bird flu. It’s not a super powerful drug for regular flu, so it’s probably not going to be a wonder drug for the bird flu,” said Dr. Melanie Ott, a virologist at UC San Francisco.

The next day doctors started her on oseltamivir, also known under the brand name Tamiflu.

One recent review found too little evidence to gauge the effectiveness of three of the four drugs, including the commonly used oseltamivir, sold as Tamiflu.

Katherine Wells, director of public health in Lubbock, Texas, said that in her state, health officials would provide short-term medical care, such as giving farmworkers the flu treatment Tamiflu.

Officials said ongoing analysis of the nation’s dairy supply suggests it is safe to consume, Despite the risk to human health being low, an official with the Administration for Strategic Preparedness and Response said it will make Tamiflu available upon request “to jurisdictions that do not have their own stockpile and are responding to pre-symptomatic persons with exposure to confirmed or suspected infected birds, cattle or other animal exposures.”