Prevention and drug treatment of influenza

Influenza remains a significant cause of morbidity, mortality and loss of productivity. Type A influenza is more common than Type B in all age groups. Influenza B outbreaks chiefly affect children. During a known outbreak, the clinical picture is generally sufficient to make the diagnosis. Early immunization, with antigens fitting the circulating strains, is the prophylactic method of choice. For Type A strains, there are specific indications for use of amantadine prophylaxis. Amantadine is also effective as specific therapy for Type A influenza after symptoms occur.