omicron variant

People wearing face masks to help protect against the spread of the coronavirus walk along the street in Tokyo, Japan

Discussion: What researchers have learned about the omicron variant

Some parts of the world are still battling the omicron variant of COVID-19, while others seem to be somewhere around its peak. Join The World’s reporter Elana Gordon for our regular series of conversations about the pandemic. She will moderate a panel on Tuesday, Jan. 25 at 12 p.m. Eastern time, and will be speaking with epidemiologist Bill Hanage of the Harvard T.H. Chan School of Public Health.

A woman speaks on her mobile phone while waiting for a light rail train, wearing a mask on her chin that she'll be required to pull over her nose and mouth on the train to help curb the spread of the coronavirus, in central Jerusalem.

Israeli researchers try to find COVID ‘threshold’ with fourth vaccine dose

Security forces stand guard inside an airport terminal in Rabat, Morocco

Discussion: The omicron variant and holiday travel

Passengers wait at a ticket counter at Johannesburg's OR Tambo's airport, Monday, Nov. 29, 2021. 

COVID-related travel bans spark outrage from targeted countries

People pass through Waterloo train station, in London, during the morning rush hour

Wary, weary world slams doors shut, fearing omicron variant