# RSV vaccines prove highly effective in older adults

> New real-world data confirms RSV shots reduce hospitalizations and deaths by 80% in seniors.
- Title: RSV vaccines prove highly effective in older adults · TIME
- Summary: New real-world data confirms RSV shots reduce hospitalizations and deaths by 80% in seniors. RSV vaccines work as well in real life as they did in clinical…
- Keywords: rsv, vaccines, older adults, respiratory syncytial virus, glaxosmithkline, pfizer, moderna, efficacy, hospitalization prevention, medicare, public health, prove
- Source: TIME — https://time.com/article/2026/09/21/rsv-vaccines-are-highly-effective-in-older-adults
- Author: Veronique Greenwood
- Published: 2026-09-21T17:19:06.638+00:00
- Read time: 1 min
- Topics: rsv, vaccines, older adults, respiratory syncytial virus, glaxosmithkline, pfizer, moderna, efficacy, hospitalization prevention, medicare, public health
## RSV kills thousands of seniors yearly
Respiratory syncytial virus causes severe illness in older adults. Two new vaccines launched in 2023 to protect against it.
## Clinical trials showed promise, but questions remained
The vaccines showed high efficacy in trials, but researchers worried they might not work as well in the real world. COVID-19 timing meant less RSV was circulating during testing.

> There was a little concern that maybe these vaccines will not turn out to be quite as potent as they appeared.
## Real-world data confirms 80% protection
A study of 14.8 million seniors found RSV vaccines reduced hospitalizations and deaths by around 80%. Results matched clinical trial efficacy.

> These have all, very interestingly, and comfortingly, really paralleled and mimicked the exact results of the efficacy trials.
## Healthcare access didn't skew the results
Vaccinated people tended to live in wealthier areas and had higher flu and COVID vaccination rates. But analysis showed healthcare access wasn't the reason for their better outcomes.
## Booster shots remain an open question
Researchers don't yet know if people need RSV boosters. The second dose produces a weaker antibody response than the first, unlike annual flu shots.

> Whether that is important, I don't think we really know.
## Future: broad-spectrum respiratory vaccines
Researchers are developing vaccines against other respiratory viruses like parainfluenza. The ultimate goal could be a single vaccine covering multiple viruses.
## Key takeaway

RSV vaccines work as well in real life as they did in clinical trials, protecting millions of older Americans from a virus that kills thousands annually.