COVID-19 | Health Ministry director-general Dr Noor Hisham Abdullah has urged greater caution after a highly contagious variant of the virus that causes Covid-19 had been confirmed in two clusters in Malaysia.

In a Facebook post just past midnight this morning, the Institute of Medical Research had just identified the virus carrying the D614G mutation in samples collected from three cases from the Sivagangga cluster, and one case in the Bukit Tiram cluster.

The three in the Sivagangga cluster are close contacts of...