~Schools are a common place for transmission of flu viruses
~An average of 1/3 of family members are infected each year
~Viruses spread especially by coughing and sneezing
~Symptoms appear 2 to 4 days after the person has been infected with the virus
~In the U.S. flu season is usually from October to April
~Most people with the flu recover in 1-2 weeks
This electron micrograph of an adenovirus was used with permssion from Paul Webster. Adenoviruses cause upper respiratory infections and conjunctivitis, also known as pink eye.