Via Hindustan Times :
" One of the two available medicines for bird flu in the country may soon be redundant. The virus that caused the outbreak in certain pockets of West Bengal last year has been found to be resistant to Amantadine. Amantadine and Tamiflu are the two drugs available in India to treat humans who contract bird flu.
If the avian influenza virus, H5N1, grows entirely resistant to Amantadine, another drug will have to be developed soon, which is an expensive and time-consuming proposition.
The detection was made recently at the High Security Animal Disease Laboratory (HSADL) in Bhopal."