Massachusetts RSV Activity This Week
Last updated:
Track current RSV hospitalization activity in Massachusetts with weekly CDC surveillance data. This page shows Massachusetts's RSV admission rate, how it compares to the national average and nearby states, and whether activity is trending up or down. Data is sourced from the CDC's HHS Protect hospital reporting system.
Key Takeaways
- 1 RSV hospitalization activity in Massachusetts is currently moderate, with 2.3 new admissions per 100,000 residents this week.
- 2 RSV admissions have been trending downward over recent weeks.
- 3 Massachusetts RSV activity is near the national rate of 2.0 per 100K.
- 4 Pediatric RSV rates (5.5 per 100K) are significantly higher than adult rates (1.4 per 100K).
- 5 Nearby states New York and Rhode Island and New Hampshire are also reporting elevated RSV activity.
CDC Recommendations at This Level
RSV is circulating — protect infants and elderly
- • Wash hands thoroughly before touching babies or young children
- • Ask visitors to wash hands before holding your baby
- • Watch for signs in infants: rapid breathing, wheezing, difficulty feeding, flaring nostrils
- • If your child is breathing fast or struggling to breathe, seek medical care right away
This is general public health guidance based on CDC recommendations — not personal medical advice. Talk to your healthcare provider about what's right for you and your family.
Massachusetts RSV Trend — 2025-2026 Season
New confirmed RSV hospital admissions per 100,000 population per week.
Is RSV Getting Better or Worse in Massachusetts?
RSV is declining in Massachusetts
Good news — rsv activity is going down. Based on CDC forecasting data, each case is leading to fewer new cases, which means you should see continued improvement in the coming weeks.
Technical details (CDC Rt estimate)
Reproduction number (Rt): 0.75 (95% CI: 0.55 – 0.99)
Probability of growth: 2%
Rt below 1.0 means each case leads to fewer new cases (declining). Above 1.0 means growing.
Based on CDC forecasting data as of March 31, 2026. Source
Massachusetts vs. National Average and Nearby States
Nearby States
| State | Activity Level | Per 100K |
|---|---|---|
| High | 3.2 | |
| Moderate | 2.7 | |
| High | 3.6 | |
| High | 3.2 | |
| Moderate | 1.9 |
Sources & Methods
RSV data reflects confirmed RSV hospital admissions reported through the CDC's HHS Protect system. Activity levels are based on new admissions per 100,000 population per week. Hospitalization data may undercount total RSV infections as many cases are managed at home. Learn more about our methods .
More Health Data for Massachusetts
Cities in Massachusetts
Health data available for these Massachusetts cities:
Frequently Asked Questions
What is the current RSV activity level in Massachusetts?
RSV activity in Massachusetts is MODERATE with 2.3 new hospital admissions per 100,000 people this week. There were 158 total new RSV admissions.
Where does this RSV data come from?
This data comes from the CDC's HHS Protect hospital reporting system. Hospitals across the United States report confirmed RSV admissions, ICU usage, and bed capacity weekly. The metric shown is new admissions per 100,000 population.
How often is this page updated?
This page is updated weekly after the CDC publishes new hospital reporting data. There is typically a 1-2 week lag between when admissions occur and when data appears here.
Local Health Signal is not affiliated with the CDC or any government agency. Data is provided for informational purposes only and is not intended for clinical decision making. See our methods page for details on data sources and limitations.