This week's report


  • Influenza severity for Massachusetts is low this week.
  • The percent of influenza-like illness (ILI) visits in Massachusetts is 1.32%, which is higher than the previous three seasons in the same week.
  • The percent of hospitalizations associated with influenza is 0.02%, which is comparable to the previous three seasons in the same week.
  • Overall ILI activity is minimal. All regions are reporting minimal ILI activity.
  • More influenza B than influenza A positive specimens have been reported by hospitals and outpatient facilities in Massachusetts.
  • Nationally, flu activity is low.
  • Additional statewide and national data including geographic spread, ILI activity, and pneumonia and influenza mortality are available at CDC’s FluView Weekly Report at and FluView Interactive
  • Statewide and national COVID data are available at: and   

Flu season has begun and the best time to get your flu shot is now. Flu vaccination is always the best way to prevent flu and its potentially serious complications.

Additional Resources

Date published: October 15, 2021
Last updated: October 15, 2021