⚠️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.😳#coronavirus https://t.co/j83FBeQXfd

— Dena Grayson, MD, PhD (@DrDenaGrayson) April 8, 2020