nature: "Kein Vorteil der bivalenten BA.1-Impfstoffe" (logisch, BA.1 spielt ja längst keine Rolle mehr...). Zuletzt aktualisiert: 05. September 2022 New Omicron-specific vaccines offer similar protection to existing boosters Updated COVID jabs have been approved in the United States and United Kingdom, but they offer roughly the same protection as existing vaccines, a study suggests. https://www.nature.com/articles/d41586-022-02806-5?