Update: now accounting for Omicron (Jan 6, 2022)

Cathleen's Discoveries

Calculate the covid risk of your activities

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A calculator for building intuition about COVID risk. We used published research to estimate the risk level of various activities in microCOVIDs. 1 microCOVID is a one-in-a-million chance of getting COVID. We hope you'll use this tool to make safer choices.

microCOVID Project

One afternoon this summer, Catherine Olsson was relaxing with a friend in San Francisco's Mission Dolores Park when she had an idea, a little spontaneous flicker from pre-pandemic life. Why not grab dinner? She called in an order for two veggie burritos at a nearby taqueria.

Calculate the covid risk of your activities

microCOVID Project

How Many Microcovids Would You Spend on a Burrito?