Protection from prior infection significantly reduced against Omicron

Prior coronavirus infections appear to be much less protective against symptomatic Omicron reinfections than reinfection with other variants, according to a new study by Qatari researchers that has not yet been peer-reviewed.

Why it matters: If you're counting on your previous coronavirus infection to keep you from getting it again, don't.

The big picture: Initial studies have found that coronavirus vaccines — particularly without a booster shot — are much less effective against Omicron infections than other variants, although they appear to hold up well against severe disease.

This study suggests the same is...