Scientists are concerned that avian (bird) flu caused by the H5N1 virus could infect humans and
cause a pandemic.
What could help prevent humans from spreading the disease?
1 killing all poultry
2 reducing the number of air flights
3 taking a course of antibiotics
1 )
1 only
2 only
3 )
3 only
4 )
1, 2 and 3
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