H7N9 shows resistance to Roche's Tamiflu

The H7N9 strain of bird flu has shown resistance to Roche's ($RHHBY) antiviral Tamiflu for the first time. In a study of 14 patients, Tamiflu failed to reduce the amount of virus found on throat swabs in three people. Resistance could limit the effectiveness of the main line of defense until a vaccine is developed. News