WHO

The head of the World Health Organization says he’s worried about the omicron and delta variants of COVID-19 producing a “tsunami” of cases between them.

Worried scientists in South Africa are scrambling to combat the lightning spread across the country of the new and highly transmissible omicron COVID-19 variant as the world grapples with its emergence

A new variant, named B.1.1.529, was named a “variant of concern” by the World Health Organization and given the name “omicron” from the letter in the Greek alphabet.

An advisory panel of the World Health Organization has classified a worrying new COVID-19 variant first detected in South Africa as a highly transmissible virus of concern, naming it “Omicron” under its Greek letter system

According to a report from the World Health Organization and the Centers for Disease Control and Prevention, millions of babies missed their first dose of the measles vaccine in 2020.

The international scientists dispatched to China by the World Health Organization to look for the origins of the coronavirus say the search has “stalled” and warn the window for getting to the bottom of the mystery is closing fast

The World Health Organization has issued a call for experts to join a new advisory group it’s forming, in part to address the agency’s fraught attempts to investigate how the coronavirus pandemic started

The head of the World Health Organization is calling for a moratorium on administering booster shots of COVID-19 vaccines as a way to help ensure that doses are available in countries where few people have received their first shots

A senior Chinese health official says China cannot accept the World Health Organization’s plan for the second phase of a study into the origins of COVID-19

The head of the World Health Organization has acknowledged it was premature to rule out a potential link between the COVID-19 pandemic and a laboratory leak

The World Health Organization has decided to assign different Greek alphabet letters like Alpha, Beta and Gamma to each new coronavirus mutation in an effort to decrease stigma.

The World Health Organization’s chief scientist Soumya Swaminathan spoke on Tuesday after several nations made the decision to halt use of the AstraZeneca COVID-19 vaccine.

NBC News senior medical correspondent Dr. John Torres writes about his search for vaccine certification.

Investigators from the World Health Organization visited a research center in Wuhan on Wednesday.

World Health Organization investigators have visited a research center in the central Chinese city of Wuhan that has been the subject of speculation about the origins of the coronavirus

A World Health Organization team looking into the origins of the coronavirus pandemic has visited the food market in the Chinese city of Wuhan that was linked to many early infections

A World Health Organization team is visiting a hospital where China says the first COVID-19 patients were treated more than a year ago.

China is trying to spread doubt about the effectiveness of Western vaccines and the origin of the coronavirus as a World Health Organization-selected team of scientists is in the city where the pandemic began

A global team of researchers has arrived in the Chinese city where the coronavirus pandemic was first detected to investigate its origins amid uncertainty about whether Beijing might try to prevent embarrassing discoveries