Studies show the US company's vaccine has 66 percent efficacy against preventing moderate to severe Covid-19.
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J&J seeks nod to start Covid vaccine trials on 12-17 age group in India
![J&J seeks nod to start Covid vaccine trials on 12-17 age group in India]()
Reviewed by শ্রী শ্রী সত্যনারায়ণ নমঃ
on
August 20, 2021
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