足彩投注比例（www.99cx.vip）_Experts fear another Covid spike as vaccine efficacy wanes

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,Experts say the efficacy of current Covid-19 jabs will begin to wane, which will make people more prone to infection. – The Malaysian Insight file pic, June 17, 2022.

MEDICAL experts have warned the government could make the second booster shot – the fourth vaccination – mandatory if a spike in Covid-19 cases reached alarming levels.

They expressed concern that the efficacy of the Covid-19 vaccines is waning.

转载说明:本文转载自Sunbet。