Influenza due to identified seasonal influenza virus

**Long definition:** Influenza due to infection with seasonal influenza virus strains, virus identified. These diseases are characterized by fever, cough, headache, myalgia, arthralgia, or malaise. Transmission is by inhalation of infected respiratory secretions. Confirmation is by identification of the specified influenza virus in a nasopharyngeal, nose, or throat swab.

**Exclusions:** - Haemophilus influenzae [H. influenzae] meningitis - Haemophilus influenzae [H. influenzae] pneumonia