The Chinese government said Friday that very few samples of bird flu virus collected here over the past two years showed resistance to a key influenza drug, contradicting complaints by international researchers that Chinese veterinary practices had rendered the drug useless if the virus were to spread to people.
Jia Youling, a senior Agriculture Ministry official who serves as the country’s chief veterinary officer, acknowledged that Chinese farmers have used the drug, amantadine, which is meant for people, on chickens and other poultry. But he said the practice was banned last year and denied that it had resulted in the bird flu virus developing a resistance to the drug.