Thread by @elisaperego78

The US CDC says people with "resolving covid symptoms" can go back to work
Bad
Let's remember: early covid is often a biphasic disease, with a mild prodromal phase
Many people seem to recover around day 5, only to develop more serious issues, including silent hypoxia, in week 2

https://twitter.com/fi_lowenstein/status/1475638511202037764

This key covid feature of symptoms going worse from around day 6, after apparent or partial resolution around day 5, was already well known in 2020!

Forcing people back to work when they might be still really sick as well as infectious is bad

#LongCovid

nytimes.com/2020/04/30/wel…

Many people especially in the youngish category but with severe | moderate disease tend to have a peak in covid severity around days 10 to 12. This has been called the "second week crash"

Some with covid pneumonia can be in life threatening conditions

businessinsider.com/what-its-like-…

Symptoms of covid including severe covid can sometimes be perceived as "mild" because of the disease features

This is the case of silent hypoxia: a potentially life-threatening state of low oxygen saturation, which is not perceived as "air hunger" or SOB by the patient

We know that even "mild" covid often doesn't stop on day five (as the CDC appears to assume) or on week two

Covid, often, is a long, protected disease, with multiple symptoms and sequelae #LongCovid

Forcing people back to work when still in danger, as on day 5, is truly bad

Thanks @fi_lowenstein for drawing attention to this aspect of the CDC policy

Covid pneumonia can be barely symptomatic or asymptomatic, too, as proven by scientific research since the early pandemic days.

But damage and prolonged disease including to the lung linger

#LongCovid

pubmed.ncbi.nlm.nih.gov/32216718/