- Design
- Phase 3, open-label, randomised non-inferiority trial
- Population
- 1,112 adults aged 60 and over in Europe and the US
- Primary outcome
- RSV neutralising and pneumococcal opsonophagocytic antibody titres
- Effect
- All primary non-inferiority criteria met for RSV-A, RSV-B and all 20 serotypes
A phase 3, open-label, randomised non-inferiority trial at 38 centres in Europe and the US enrolled 1,112 adults aged 60 and over. They received an adjuvanted RSV prefusion F protein vaccine and a 20-valent pneumococcal conjugate vaccine either together or one month apart. Published in Clinical Infectious Diseases on 7 October 2026.
Immune responses to RSV-A, RSV-B and all 20 pneumococcal serotypes after co-administration were non-inferior to sequential administration. Reactogenicity and safety were similar, with mostly mild to moderate, short-lived reactions. Serious adverse events were rare and judged unrelated.
The trial measured antibody levels, not protection against disease, and was open-label. But the practical message is straightforward: offering both vaccines at one visit removes a second appointment, which is often where older adults are lost. Availability and national recommendations for these vaccines in India vary, so check current guidance before offering them.
- Consider giving RSV and pneumococcal conjugate vaccines at the same visit in adults aged 60 and over
- Use separate injection sites and record both vaccines
- Warn about short-lived local and systemic reactions
- Check current national recommendations and local availability before offering
Why it matters
Each extra appointment loses some older adults; co-administration can raise coverage.
Don't overread it
Antibody levels are a surrogate; the trial did not measure protection from disease.
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