Yes, REINFECTIONS can happen. IMMUNITY PASSPORTS advocates were wrong to push that idea. Reno, Nevada case proves it. My thread 🧵 below explains the study. But bigger questions now is how often, and do we need to policy address it? Unclear. #COVID19 reuters.com/article/us-hea… 
2) Full thread explaining the reinfection study.
3) One key point also is that the person was even antibody positive DURING the onset of the second infection while just getting admitted to hospital. Antibodies take several weeks to develop, so most likely it was residual from 1st. But didn’t offer immunity.
