Delta Variant Engulfs These Asian Countries With Fastest-Growing Deaths Delta Variant Engulfs These Asian Countries With Fastest-Growing Deaths Southeast Asias overall COVID-19 vaccination rate of 9% lags developed regions like Western Europe and North America and outpaces only Africa and Central Asia. COVID-19 Delta outbreak: Indonesia surpassed India in new daily cases this week (File) Southeast Asia is emerging as a battlefield for one of the world's worst COVID-19 outbreaks, due to the fast-spreading Delta variant and the slow rollout of vaccines. With a population about twice that of the US, the momentum of the region's outbreak has now eclipsed previously hard-hit places like Latin America and India, with cases jumping 41% over the past week to more than a half-million, according to