Bird Flu Symptoms In Humans 2024 Dates. How does bird flu spread to humans? The symptoms of h5n1 infection may include fever (often high fever, > 38°c) and malaise, cough, sore.
Symptoms typically show up within seven days of contact with the virus but can take as long as two weeks. Bird flu, also called avian influenza, is a viral infection that can also infect humans and other animals.