Influenza (also known as the flu) is a contagious respiratory illness caused by flu viruses. Two basic types of flu virus circulate
in the United States, group A and group B. Influenza A may cause moderate to severe illness in all age groups and infects humans
and other animals. Influenza B causes milder symptoms and affects only humans, primarily children. The best way to prevent the flu
is by getting a flu vaccine each year.
Additional Resources:
Connecticut Influenza Surveillance
CDC Influenza Surveillance
