Omicron is here. What are your treatment options if you get Covid-19?

There’s still a lot we don’t know about the coming omicron wave, but there’s one thing we can be pretty sure about: A lot of people are going to get sick. Omicron is highly contagious, and people with previous immunity from a Covid-19 infection, or from vaccination, appear more vulnerable to omicron than to previous variants.

For vaccinated people, omicron cases are likely to be mild, but even a small fraction of cases resulting in hospitalization can overwhelm our hospitals if enough people get sick at once — which looks likely to...