Comparison of Respiratory Syncytial Virus (RSV)–Specific Antibody Durability in Pregnant/Postpartum Individuals and Older Adults After RSV Vaccination
Alisa Kachikis, Collrane Frivold, Mindy Pike, Jonathan C Reed, Jennifer E Stolarczuk, Kittredge McVey, Erica Clark, Clarice Mauer, Sandra McAteer, Ioana Maria Saidac, Alex Harteloo, Marco Carone, Grace Marshall, Linda O Eckert, Alexander L Greninger, Janet A Englund, Helen Y Chu · 2026
Read Comparison of Respiratory Syncytial Virus (RSV)–Specific Antibody Durability in Pregnant/Postpartum Individuals and Older Adults After RSV Vaccination by Alisa Kachikis, Collrane Frivold, Mindy Pike, Jonathan C Reed, Jennifer E Stolarczuk, Kittredge McVey, Erica Clark, Clarice Mauer, Sandra McAteer, Ioana Maria Saidac, Alex Harteloo, Marco Carone, Grace Marshall, Linda O Eckert, Alexander L Greninger, Janet A Englund, Helen Y Chu (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/PMC13431677.txt.
Description
Kachikis and colleagues compare how long vaccine antibodies last in pregnant patients and older adults. Their 2026 prospective study follows people who received a first respiratory syncytial virus vaccine in 2023 or 2024, a shot recommended in pregnancy to protect newborns. Samples came from 36 vaccinated pregnant participants and 16 vaccinated older adults, collected for up to fifteen months.
Antibody levels twelve to fifteen months after vaccination were similar in the two groups, suggesting maternal vaccine antibodies hold up for at least a year. Binding antibody levels and neutralising antibody levels, the kind that block the virus, tracked each other closely. The durability question matters because United States guidance does not currently recommend revaccination in later pregnancies, relying instead on antibody treatment for infants. The authors present the one-year persistence as evidence informing that policy.
Catalog record
| CREATOR | Alisa Kachikis, Collrane Frivold, Mindy Pike, Jonathan C Reed, Jennifer E Stolarczuk, Kittredge McVey, Erica Clark, Clarice Mauer, Sandra McAteer, Ioana Maria Saidac, Alex Harteloo, Marco Carone, Grace Marshall, Linda O Eckert, Alexander L Greninger, Janet A Englund, Helen Y Chu |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 16 KB |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |