Khairy explains why herd immunity no longer realistic

Last year, Malaysia had set the goal of vaccinating 70 percent of its population against Covid-19 in order to achieve herd immunity against the disease, and thus facilitate a return to pre-pandemic normalcy.

With the appearance of the Delta variant, however, Health Minister Khairy Jamaluddin said achieving herd immunity is no longer considered realistic due to two factors – the variant’s high transmissibility, and vaccines’ reduced effectiveness against...