Mexico now has the third most COVID-19 deaths in the world, behind the United States and Brazil, while former success story Vietnam is struggling to control an outbreak spreading in its most famous beach resort.China reported a more than 50 per cent drop in newly confirmed cases in a possible sign that its latest major outbreak in the northwestern region of Xinjiang may have run its course.However, in Hong Kong, infections continue to surge, with more than 100 new cases reported as of Saturday among the population of 7.5 million.