'Spreading rapidly': The WHO warns Delta is the 'most transmissible variant' so far

COVID-19 death toll, saying there have been more than 180,000 fatalities since the pandemic hit the country early last year.

FILE - In this March 20, 2021 file photo, a worker digs a grave in the San Juan Bautista cemetery in Iquitos, Peru, amid the new coronavirus pandemic. Source: AP Photo/Rodrigo Abd

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The World Health Organization is warning the Delta variant is the "most transmissible variant identified so far" as medical experts say it also bypasses any immunity from a previous infection.

The highly-contagious Delta variant is causing a surge in new COVID-19 cases even in countries with high vaccination rates - and experts warn that immunisation campaigns are in a race against time to contain it.

Globally, the pandemic is still slowing down, with the World Health Organization (WHO) reporting the lowest number of new cases worldwide since February and decreasing deaths attributed to the coronavirus.

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