Health authorities detected 4 cases of influenza A resistant to Tamiflu antiviral, and initiated an investigation to confirm a possible mutation of the virus.

According to a study by the Public Health Commission from the Ministry of Health in Spain, tobacco and obesity are the two most important factors that can aggravate a bout of influenza A.

Adults and children who are severely ill with H1N1 flu or at high risk of complications should be treated with antivirals like Tamiflu.

Roche sharply lifted its profit and sales outlook, citing expected benefits from the integration of U.S. biotechnology company Genentech and higher sales of antiviral treatment Tamiflu.

Juan Manzur, Minister of Health announced that: ” We increased the supply of antiviral treatments for the new flu for it to be available to all those over 15 years of age within the 48 hours showing symptoms.”

Tamiflu is hard to find and Argentineans already buy it in quantity in Montevideo. Also, today it was known another case where a new strain of the virus resists this medicine.

The National Institute of Serology of Denmark has detected the first case in the world of a person affected by H1N1 virus has shown resistance to treatment with the antiviral Tamiflu.