Read on Twitter
The antibody story to #COVID19 is not simple:
1. Some people w/ infection don& #39;t develop much IgG (it& #39;s about level, not just 0|1)
https://www.scmp.com/news/china/science/article/3078840/coronavirus-low-antibody-levels-raise-questions-about
2.">https://www.scmp.com/news/chin... People w/ IgG may still spread (not neutralizing) or get reinfected
3. Duration of Ab/protection is unknown (months/yrs?)
1. Some people w/ infection don& #39;t develop much IgG (it& #39;s about level, not just 0|1)
https://www.scmp.com/news/china/science/article/3078840/coronavirus-low-antibody-levels-raise-questions-about
2.">https://www.scmp.com/news/chin... People w/ IgG may still spread (not neutralizing) or get reinfected
3. Duration of Ab/protection is unknown (months/yrs?)
Some data from the study of 175 patients after #COVID infection to show the variable levels of neutralizing antibody response and influence of age https://www.medrxiv.org/content/10.1101/2020.03.30.20047365v1.full.pdf">https://www.medrxiv.org/content/1... (preprint)
This report of possible reinfection in 51 S Koreans who had recovered adds to the antibody protection concerns https://fortune.com/2020/04/09/coronavirus-reinfection-fears-grow-cured-patients-test-positive-reactivated-virus/">https://fortune.com/2020/04/0...
