@WHO: These results confirm we must do everything possible to reduce the circulation of the virus, prevent infections & reduce the opportunities for the SARS-CoV-2 to evolve resulting in mutations that may reduce the efficacy of existing #COVID19 vaccines. ▶️ https://t.co/J7NN9Dx6cq https://t.co/YXcx11VPlQ
http://twitter.com/WHO
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