While several epidemiologists have predicted a high probability of a second wave of Covid-19, they seemed to be mostly talking about previously uninfected people falling ill.
However, there’s another wrinkle just recently coming to light: people who were recovering are testing positive again.
As the article states, they don’t know yet WHY this is happening. Some could be false positive tests, but not all, since some of the Re-infected are displaying symptoms. Some could be false recoveries. Some could be re-infections, possibly by other strains, or demonstrating that infection-based immunity to Covid-19 is vanishingly brief. Least likely, but still possible, is something seen in non-coronaviruses, namely going dormant for a while then re-emerging.
However, there’s another wrinkle just recently coming to light: people who were recovering are testing positive again.
Recovered coronavirus patients test positive again in blow to immunity hopes
South Korea reported on Friday that 91 recovered coronavirus patients have tested positive for the disease again, raising questions over health experts' understanding of the pandemic. The prospect of people being re-infected with the virus is of international concern, as many countries are...
www.yahoo.com
As the article states, they don’t know yet WHY this is happening. Some could be false positive tests, but not all, since some of the Re-infected are displaying symptoms. Some could be false recoveries. Some could be re-infections, possibly by other strains, or demonstrating that infection-based immunity to Covid-19 is vanishingly brief. Least likely, but still possible, is something seen in non-coronaviruses, namely going dormant for a while then re-emerging.