Asia plays the long game on Covid vaccine rollout

Asia has led the world in controlling the spread of Covid-19, but that very success has set the region behind the US and Europe in the race to vaccinate against the disease. In countries with limited coronavirus outbreaks, regulators have been happy to let westerners act as guinea pigs for quickly approved jabs, while in others, the low level of Covid-19 cases means that locally developed vaccines have struggled to complete clinical trials. Asia’s vaccine caution contrasts with fervent enthusiasm in the US and Europe, where coronavirus infection is raging and authorities have made it a point of pride to grant approvals quickly.