Children who are ill should be kept out of school until their fever and rash have subsided and all the vesicles have dried and crusted;

病童应留在家中，直至热度及红疹消退，以及所有水泡结痂后才回校上课；

youdao

The next morning, my fever had subsided, though I still felt weak, not as steady on my feet as before.

NEWYORKER: The House Behind a Weeping Cherry

When and why do the shares go up?. Condo fever may have subsided, but there are still cities where you can buy good units sporting a government subsidy ( Click here for more).

FORBES: Magazine Article

Even after concern about her fall had subsided, Walters had been kept hospitalized last week because of a lingering fever, and doctors found the unexpected cause.

WSJ: Barbara Walters hospitalized with chickenpox