H7N9 asymptomatic carriers mean the virus will persist within agriculture
For the moment this virus circulates without causing symptoms. No portable farmet friendly diagnostic "dip-stick"type test is available. H7 viruses are poorly immunogenic, meaning human vaccines to H7 varieties are inefficient. Anti-viral meds are essential to treat severe cases in people since the death rate among infected people is 21%. Objectively speaking anti-flu medications are relatively few and only one is for intra-venous administration. It seems the intellectual property of anti-flu formulations is vital for human health. Short term speculation such as is being muted about outbreaks is ridicilous. Flu medications are vital to human health.