The highly transmissible Delta variant, first detected in India, is sweeping the globe as countries race to inoculate their populations to ward off fresh outbreaks.
Nations across the globe hit new pandemic highs and reimposed Covid-19 restrictions as the highly contagious Delta variant forced governments to put the brakes on plans to return to normality.
The highly transmissible Delta variant, first detected in India, is sweeping the globe as countries race to inoculate their populations to ward off fresh outbreaks and allow for economies and daily life to recover.
The European Union, lambasted early on in the pandemic response for a botched vaccine acquisition programme, said on Saturday it has delivered enough shots to cover 70 percent of the bloc's population.
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"By tomorrow, some 500 million doses will have been distributed to all regions of Europe," EU Commission President Ursula von der Leyen said.
But according to the European Centre for Disease Prevention and Control, the proportion of adults aged 18 years or over fully vaccinated in the EU and European Economic Area is still only 44.1 percent.
Supply shortages in South Korea have meant only about 11 percent of the country's 52 million population is fully vaccinated, according to health authorities.
The nation, held up as a model of how to combat the pandemic, reported 1,378 new coronavirus cases on Saturday, a third straight record high.
In Pakistan, where less than eight percent of the population has been vaccinated, the government said only those who had received jabs would be allowed to fly.
"We could face dangerous consequences if we do not take steps to control the Delta variant," the National Command and Operation Centre said in a statement.
The country of around 215 million people has largely escaped the worst of the pandemic, with under a million recorded infections and around 23,000 deaths - although cases are on the rise again.
While vaccines have been successful in mitigating the worst effects of infections, concerns have been raised about how well some of them will cope with more virulent strains.
In Indonesia, which is fighting a ferocious wave of infections, more than a dozen fully inoculated frontline health workers have died, according to the country's medical association.
Authorities said on Friday that medics would be given a third booster jab using the vaccine made by US company Moderna, to provide them extra protection.
The Southeast Asian nation has been depending heavily on China's Sinovax shots amid the global shortage of alternatives that have been mostly supplied to rich nations.
The rapid spread of the Delta variant across Asia, Africa and Latin America is exposing crucial vaccine supply shortages for some of the world's most poorest and most vulnerable populations.