U.S. Centers for Disease Control and Prevention

The Kremlin on Thursday rejected allegations by the United States that Russian forces had used a "chemical weapon" in Ukraine and blasted new sanctions targeting Moscow's key trading partners.

The U.S. State Department said Wednesday that Russia used "the chemical weapon chloropicrin" against Ukrainian forces.

U.S. authorities are investigating Meta over its role in the illicit sale of medications, The Wall Street Journal reported on March 16.

Turkey has no monkeypox virus cases as the latest tests on four suspected patients have emerged negative, the country's health minister has said.

"Tests have been made on four patients suspected to be infected with monkeypox in Istanbul. All are negative," Fahrettin Koca tweeted late on June 4.

As of Saturday, the United States had administered 412,856,169 doses of COVID-19 vaccines and sent 503,521,625 doses to vaccination centers, the U.S. Centers for Disease Control and Prevention said.

It depends, mostly on whether or not you're vaccinated.

If you're fully vaccinated, the latest guidance from the U.S. Centers for Disease Control and Prevention says you no longer need to wear a mask or physically distance in most situations. That includes when you're outside and in many indoor spaces like restaurants, though you still need to follow any local or business rules.

 A new, highly transmissible variant of the coronavirus first discovered in Britain could become the dominant variant in the United States by March, the U.S. Centers for Disease Control and Prevention warned on Friday.

The United States logged a second consecutive day of fewer than 900 coronavirus deaths, as the World Health Organization hailed global progress but warned of the need for "extreme vigilance" against a second wave.    

U.S. officials were deciding where to dock a cruise ship in California with 21 virus cases aboard and four American universities canceled in-person classes as sweeping efforts to contain the outbreak that started in China spread to the West.

The Grand Princess, with 3,500 people aboard, was in international waters off San Francisco late on March 6.

Asia reported hundreds of new coronavirus cases on Feb. 26, including the first U.S. soldier to be infected, as the United States warned of an inevitable pandemic, and outbreaks in Italy and Iran spread to more countries.

U.S. health officials have concluded that infection with the Zika virus in pregnant women is a cause of the birth defect microcephaly and other severe brain abnormalities in babies.