November 16, 2005 - WHO confirms two human cases of bird flu in China, including a female poultry worker who died from the H5N1 strain.
November 17, 2005 - Two deaths are confirmed in Indonesia from the H5N1 strain of avian influenza.
January 1, 2006 - A Turkish teenager dies of the H5N1 strain of avian influenza in Istanbul, and later that week, two of his sisters follow.
January 17, 2006 - A 15-year-old girl from Northern Iraq dies after contracting bird flu.
February 20, 2006 - The French Health Ministry confirms that a duck in central France had the H5N1 strain of avian flu.
February 20, 2006 - Vietnam becomes the first country to successfully contain the disease. A country is considered disease-free when no new cases are reported in 21 days.
March 12, 2006 - Officials in Cameroon confirm cases of the H5N1 strain. The avian flu has now reached four African countries.
March 13, 2006 - The avian flu is confirmed by officials in Myanmar (Burma).
May 11, 2006 - Djibouti announces its first cases of H5N1 - several birds and one human.
December 20, 2011 - The U.S. Department of Health and Human Services releases a statement saying that the government is urging scientific journals to omit details from research they intend to publish on the transfer of H5N1 among mammals. There is concern that the information could be misused by terrorists.
July 31, 2012 - Scientists announce that H3N8, a new strain of avian flu, caused the death of more than 160 baby seals in New England in 2011.
March 2013 - The official Chinese news agency Xinhua reports that two people in China have died after falling ill with a strain of bird flu, H7N9, not detected before in humans.
November 6, 2013 - There have been 139 confirmed cases of H7N9 including 45 confirmed deaths.
December 2, 2013 - A woman in Hong Kong is hospitalized with H7N9 after coming in contact with live poultry in the mainland China city of Shenshen.