Weekly Flu Report, January 14, 2022

Massachusetts Department of Public Health weekly influenza update

Table of Contents

This week's report


  • Influenza severity for Massachusetts is low this week.
  • The percent of influenza-like illness (ILI) visits in Massachusetts is 3.19%, which is above the regional baseline of 2.0%.
  • The percent of hospitalizations associated with influenza is 0.32%, which is lower than the previous seasons in the same week.
  • Overall ILI activity is moderate. Central and Southeast regions are reporting high ILI activity; Boston, Inner Metro Boston, Northeast, and Outer Metro Boston regions are reporting moderate ILI activity; West region is reporting low ILI activity. 
  • More influenza A than influenza B positive specimens have been reported by hospitals and outpatient facilities in Massachusetts. For influenza A, the predominant strain is currently H3N2.
  • Nationally, influenza activity declined slightly this week but remains elevated and is expected to continue for several weeks.
  • Additional statewide and national data including geographic spread, ILI activity, and pneumonia and influenza mortality are available at CDC’s FluView Weekly Report at www.cdc.gov/flu/weekly and FluView Interactive https://www.cdc.gov/flu/weekly/fluviewinteractive.htm.
  • Statewide and national COVID data are available at

        https://www.mass.gov/info-details/covid-19-response-reporting and   


It’s not too late to get vaccinated. Flu vaccination is always the best way to prevent flu and its potentially serious complications.

Additional Resources

Date published: January 14, 2022

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