以太坊博彩游戏（www.eth108.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.以太坊博彩游戏（www.eth108.vip）采用以太坊区块链高度哈希值作为统计数据，以太坊博彩游戏数据开源、公平、无任何作弊可能性。
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.