Bird Flu In Symptoms. Avian flu has a much higher mortality rate than seasonal influenza. According to the mayo clinic, the following bird flu symptoms appear in infected individuals within two to seven days of infection:
Avian influenza (bird flu) is a notifiable animal disease.if you suspect any type of avian influenza in poultry or captive birds you must report it. Roughly 53% of people diagnosed with h5n1 and 50% of people diagnosed with h7n9 have died. Bird flu symptoms in people can vary.