Seasonal Influenza (Flu)

Influenza is a contagious, upper-respiratory disease caused by different strains of influenza viruses. While many people use the imprecise term "flu" to describe 24 or 48 hour bouts of illness, real influenza can interfere with normal daily activities for as long as a week.

Influenza is not a minor inconvenience. As many as 200,000 Americans are hospitalized because of it each year, and as many as 36,000 die of the disease or complications associated with it.

Children under age 1, adults 65 or older and people suffering from certain medical conditions are at a higher risk of serious complications.

Montana 2018-2019 Final Influenza Season Summary


Girl with a cold Vaccine

Posters Information for healthcare providers

Montana Influenza Activity Map U.S. flu activity


Is it a cold or is it influenza? Posters available for download (click on an image to download a printable version).

   Cold vs Flu Infograph       is it a cold or is it influenza?       cold versus flu poster

threewaystostopflu          Handwashing_is_in_CDC       FLU_CDC