Multiple choice

The H5N1 virus which causes bird flu was first discovered in

  1. 1991

  2. 1995

  3. 1997

  4. 2001
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In 1997, Hong Kong fell victim to avian influenza in which both poultry and humans being affected. The first occurrence of the H5N1 virus on humans led to 18 people being hospitalized and 6 of them falling victim to it. 1·5 million chickens were killed in an attempt to eliminate the sources of the infection. One conclusion however was that the virus spread mainly from birds to humans.

Keep practicing — related questions