皇冠网址（www.hg108.vip）_Experts fear another Covid spike as vaccine efficacy wanes
,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.皇冠网址（www.hg108.vip）是一个开放皇冠正网即时比分、皇冠网址的平台。皇冠网址（www.hg108.vip）提供最新皇冠登录，皇冠APP下载包含新皇冠体育代理、会员APP。
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.