On December 16, 2020, the EEOC updated its guidance on COVID-19 and disability-related matters. See here – https://www.eeoc.gov/wysk/what-you-should-know-about-covid-19-and-ada-rehabilitation-act-and-other-eeo-laws.
This recent update was primarily to account for issues concerning vaccinations, which employers may be allowed to require, subject to some exceptions and accommodations.