# Waning of vaccine effectiveness against moderate and severe covid-19 among adults in the US from the VISION network: test negative, case-control study

> Research article (BMJ, 2022) · cited 195× · AI/ML

**Wikidata**: [openalex:W4300863078](https://www.wikidata.org/wiki/openalex:W4300863078)  
**Source**: https://4ort.xyz/entity/waning-of-vaccine-effectiveness-against-moderate-and-severe-covid-19-among-adults-in-the-us-from-the-vision-network-test