EA Funds now supports donations to NTI Biosecurity and the Centre for Health Security at Johns Hopkins. The Open Philanthropy Project has made grants to both orgs previously. Both seem like strong donation options, both for their immediate role in coordinating COVID-19 response efforts, and for their work on the more general problem of biosecurity and pandemic preparedness.
Thought I had, turns out you need to verify separately for the wiki and the forum. Thanks Julia for posting.