The head of the World Health Organization said on Wednesday he regrets U.S. President Donald Trump's decision to pull funding for the agency, but that now is the time for the world unite in its fight against the new coronavirus.

Trump's move prompted condemnation from world leaders as global coronavirus infections passed the 2 million mark.

The United States is the world's worst-affected country and its coronavirus death toll topped 30,000 on Wednesday, according to a Reuters tally. The fatalities have doubled in just a week and set a record single-day increase for the second day in a row.