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appalachiablue

(43,448 posts)
2. Maybe, I read more than a yr ago that China's Sinovac shots that've been
Sat Dec 3, 2022, 05:12 PM
Dec 2022

used in Brazil are not as lasting, effective.

- Nature: 'China’s COVID vaccines have been crucial — now immunity is waning.' Oct. 2021. - Billions of shots of China’s CoronaVac and Sinopharm vaccines have been given globally, but studies have questioned the length of protection they offer. -

https://www.nature.com/articles/d41586-021-02796-w

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