Usually the CDC is reliable, but is seems to have become politicized recently. The local county Health Dept is a good source of reliable information. They may have a mailing list you could get on.
Also I like to keep my eye on journal articles....like in JAMA. They are usually cutting edge and honest about their limitations. You can read the abstracts for free. Today the site has:
Treatment of 5 Critically Ill Patients With COVID-19 With Convalescent Plasma.
Management of Critically Ill Adults With COVID-19
Presumed Asymptomatic Carrier Transmission of COVID-19
There are other journals worth watching as well, such as the New England Journal of Medicine which is worth checking out for COVID news.