Influenza (flu) is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness. Serious outcomes of flu infection can result in hospitalization or death.
U.S. Influenza Vaccine Products for the 2019-20 Season
Inactivated Influenza Vaccines (IIVs) and Recombinant Influenza Vaccine (RIV4)
The Influenza Division at CDC collects, compiles and analyzes information on influenza activity year-round in the United States. FluView, a weekly influenza surveillance report, and FluView Interactive, an online application which allows for more in-depth exploration of influenza surveillance data, are updated each week.
Influenza is a contagious infection of the nose, throat, and lungs. There are two main types: A and B. Each type includes different strains that change from year to year.
An influenza pandemic can occur when a non-human (novel) influenza virus changes in such a way that it is able to infect humans easily and spread easily from person to person. Examples of recent novel viruses include avian influenza A (H5N1) and avian influenza H7N9. These are non-human viruses that circulate in birds in parts of the world so there is little to no immunity against these viruses among people.
UALHD supports Utah’s 13 local health departments in promoting and protecting public and environmental health through prevention and education.
