This is very worrisome. Among recovered former #COVID19 cases, “nearly a third had unexpectedly low levels of antibodies. In some cases, antibodies could not be detected at all.”
— Eric Feigl-Ding (@DrEricDing) April 8, 2020
Scientists in Shanghai say some recovered patients show no signs of the neutralising proteins
Early-stage findings could have implications for vaccine development and herd immunity, they say
Researchers in Shanghai hope to determine whether some recovered
have a higher risk of reinfection after finding surprisingly low levels of Covid-19 antibodies in a number of people discharged from hospital.
A team from Fudan University analysed blood samples from 175 patients discharged from the Shanghai Public Health Clinical Centre and found that nearly a third had unexpectedly low levels of antibodies.
In some cases, antibodies could not be detected at all.
“Whether these patients were at high risk of rebound or reinfection should be explored in further studies,” the team wrote in preliminary research released on Monday on Medrxiv.org, an online platform for preprint papers.
Although the study was preliminary and not peer-reviewed, it was the world’s first systematic examination of antibody levels in patients who had recovered from Covid-19, the disease caused by the coronavirus, the researchers said.
21% deaths among closed cases right now.
Then to boot, consider that CLOSED cases will test POSITIVE 1/3 of the time and it gets really hairy.