Anonymous ID: 44abe1 Feb. 3, 2022, 10:01 a.m. No.15536936   🗄️.is 🔗kun

Cross-sectional study finds evidence of natural immunity in unvaccinated healthy US adults up to 20 months after confirmed COVID-19 infection.

 

https://jamanetwork.com/journals/jama/fullarticle/2788894