https://abs.twimg.com/emoji/v2/... draggable="false" alt="⚠️" title="Warning sign" aria-label="Emoji: Warning sign">A study of 175 #COVID19 patients discharged from hospital in #China showed *30% had extremely low levels of antibodies* with NO antibodies detected in ~6%.

Low levels of antibodies could affect herd immunity and vaccine effectiveness.https://abs.twimg.com/emoji/v2/... draggable="false" alt="😳" title="Flushed face" aria-label="Emoji: Flushed face">

#coronavirus https://www.scmp.com/news/china/science/article/3078840/coronavirus-low-antibody-levels-raise-questions-about">https://www.scmp.com/news/chin...

All patients had recently recovered from mild #COVID19 and had fever, cough and chills.

Antibody levels rose with age: 60-85 yo had >3x the amount than 15-39 yo.

Other parts of the immune system, such as T-cells or cytokines, may have played a key role in fighting #coronavirus.

This study is PRELIMINARY and needs to be peer-reviewed. If confirmed, these results suggest that a standard vaccine approach (to generate neutralizing antibodies) *may* not be effective in a relatively large portion of the population.

https://twitter.com/drdenagrayson/status/1247848967502811136?s=21">https://twitter.com/drdenagra... https://twitter.com/drdenagrayson/status/1247848967502811136">https://twitter.com/drdenagra...

Here’s a link to the pre-print, NON-peer-reviewed article.

https://www.medrxiv.org/content/10.1101/2020.03.30.20047365v1.full.pdf">https://www.medrxiv.org/content/1...