The mutation called D614G was found in at least three of the 45 cases in a cluster that started from a restaurant owner returning from India and breaching his 14-day home quarantine. The man has since been sentenced to five months in prison and fined. The strain was also found in another cluster involving people returning from the Philippines.
The strain could mean that existing studies on vaccines may be incomplete or ineffective against the mutation, said Director-General of Health Noor Hisham Abdullah.
