Bird flu usually does not make wild birds sick, but can make domesticated birds very sick and kill them. Bird flu does not usually infect humans; however, several instances of human infections and outbreaks have been reported since 1997. When such infections occur, public health authorities monitor the situation closely because of concerns about the potential for more widespread infection in the human population.

Avian Flu alerts, advisories, updates

• Update on Avian Influenza A (H5N1) August 12, 2004
• Interim Recommendations for Persons with Possible Exposure to Avian Influenza During Outbreaks Among Poultry in the United States February 24, 2004

CDC Avian Flu site

• Avian Influenza - includes overview, updates, travel information and professional guidance.

WHO Avian Flu site

• Avian Influenza - includes worldwide updates, guidelines, recommendations, descriptions and case reporting.