KOTA KINABALU: The mild form of Covid-19 infections in Sarawak indicates a shift towards the endemic phase as the country achieves herd immunity, says Khairy Jamaluddin. “Only four of the 3,714 cases recorded on Monday were serious,” he told reporters after witnessing the single-dose CanSino vaccination drive for islanders in Pulau Larapan in Semporna yesterday. Khairy said that with the population in Sarawak already achieving herd immunity, it was clear that those who tested positive were only mildly infected. On the mobile vaccination drive, Khairy said the single-dose CanSino vaccine would be used for people on the islands, as well as those in the interior. “With a high vaccination rate, there is a significant drop in the severity of the disease and deaths,” he said when contacted.