A more aggressive mutation of the Covid-19 virus is believed to be the cause for the higher infection rate of cases linked to Patient 26, say the Health Ministry.<br /><br />Health director-general Datuk Dr Noor Hisham Abdullah said the Institute for Medical Research (IMR) had found a mutation that might have caused the virus to become more aggressive in the case of Patient 26.<br /><br />WATCH MORE: https://thestartv.com/c/news<br />SUBSCRIBE: https://cutt.ly/TheStar<br />LIKE: https://fb.com/TheStarOnline
