Influenza, or common name "flu", is an infectious disease which affects millions of people worldwide. Influenza is caused by Orthomyxoviridae (Influenza viruses) which consists of a family of RNA viruses. Influenza viruses mainly infect the respiratory system. Symptoms of influenza include runny nose, headache, fever, sore throat and nausea.
- ↑ Brooks, G.F., Carroll, K.C., Butel, J.S., Morse, S.A., Mietzner, T.A. (2010:539). Jawetz, Melnick & Adelberg's Medical Microbiology, 25th edition, New York: The McGraw-Hill Companies.