Scientists probe JYNNEOS Vaccine's lasting power

NCT ID NCT06366672

First seen Nov 01, 2025 · Last updated May 16, 2026 · Updated 30 times

Summary

This study looks at how long the JYNNEOS vaccine (used for smallpox and monkeypox) stays effective. Researchers will measure immune responses in the blood, lungs, skin, and bone marrow of 20 healthy adults aged 18-60 who have never had the vaccine or monkeypox before. The goal is to understand how long protection lasts, not to test a new treatment.

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Contacts and locations

Locations

  • Washington University in Saint Louis School of Medicine Emergency Care and Research Core

    St Louis, Missouri, 63110, United States

Conditions

Explore the condition pages connected to this study.