A pandemic of the novel coronavirus has infected over three-quarters of a million people around the world.

The new respiratory virus, which causes an illness known officially as COVID-19, has rapidly spread to every continent except Antarctica since first emerging in China in December. There are now more than 787,000 diagnosed cases of COVID-19, according to data compiled by the Center for Systems Science and Engineering at Johns Hopkins University. Over 166,000 of those patients have recovered from the disease while more than 37,000 have died.

With more than 164,000 diagnosed COVID-19 cases, the United States has by far the highest national tally in the world. The virus has spread to every U.S. state as well Washington, D.C., and Puerto Rico. At least 3,170 people have died from COVID-19 in the United States.

Today’s biggest developments:

US Open tennis complex to transform into temporary hospital
Worldwide diagnosed cases top three-quarters of a million
US nears China’s death toll from virus
Tune into ABC at 1 p.m. ET and ABC News Live at 4 p.m. ET every weekday for special coverage of the novel coronavirus with the full ABC News team, including the latest news, context and analysis.