Influenza

See flu.

Influenza or "flu" is a serious and sometimes deadly lung infection that can spread quickly in a community. Symptoms include fever - often a high temperature of more than 102 degrees Fahrenheit (38.9 degrees Celsius), headache, muscle aches and pains, chills, cough and chest pain when you take a breath (pleuritic chest pain). Although most people recover from the illness, the Centers for Disease Control and Prevention estimates that in the United States more than 200,000 people are hospitalized and about 36,000 people die from the flu and its complications every year.