Yale School of Public Health

BEIJING: The Delta variant is challenging China's costly strategy of isolating cities, prompting warnings that Chinese leaders who were confident they could keep the Coronavirus out of the country need a less disruptive approach. As the…

WASHINGTON: The White House on Tuesday urged Republican leaders in Florida and Texas to follow public health guidelines on the pandemic or "get out of the way" as the United States struggles to contain the spread of the Delta variant of…