As more infectious variants of Covid-19 spread, former prime minister Najib Abdul Razak has urged Putrajaya to impose a 14-day quarantine rule on all international arrivals.

The two-week rule currently only applies to those arriving from 39 countries where Covid-19 variants of concern have been detected.

Indian arrivals are quarantined for 21 days. Travellers from other countries must quarantine for 10 days if they test negative on arrival. If travellers test negative...