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Moderna says its vaccine is 90% effective against COVID-19, and 95% effective against severe disease for six months after the second dose.

Moderna says its vaccine is 90% effective against COVID-19, and 95% effective against severe disease for six months after the second dose. It also says its vaccine is effective against the 501.V2 variant from South Africa.

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HealthModerna says its vaccine is 90% effective against COVID-19, and 95% effective against severe disease for six months after the second dose.

Moderna says its vaccine is 90% effective against COVID-19, and 95% effective against severe disease for six months after the second dose. It also says its vaccine is effective against the 501.V2 variant from South Africa.

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