Testing people for Covid-19 can be difficult. Antigen tests, often used to check for the flu and strep, are simpler than most coronavirus tests — and potentially less reliable — but may offer a quicker route, the CDC says.

Testing people for Covid-19 can be difficult. Antigen tests, often used to check for the flu and strep, are simpler than most coronavirus tests — and potentially less reliable — but may offer a quicker route, the CDC says. https://t.co/0KkaV2W1Ad

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