WHO warns that new virus variant poses 'very high' risk

Dr. Rochelle Walensky, director of the U.S. Centers for Disease Control and Prevention, reacted to the potential threat by urging everyone 18 and older to get booster shots, because “strong immunity will likely prevent serious illness." Earlier this month, the U.S. opened boosters to all adults but recommended them only for those 50 and older or people in long-term care.

The omicron infections have underscored the difficulty in keeping the virus in check in a globalized world of jet travel and open borders. Yet many countries are trying to do just that, against the urging of the WHO, which noted that border closings often have limited effect and can wreak havoc on lives and livelihoods.

Some have argued that such restrictions can buy valuable time to analyze the new variant.

While the initial global response to COVID-19 was criticized as slow and haphazard, the reaction to the omicron variant came quickly.

“This time the world showed it is learning,” said EU Commission President Ursula von der Leyen, singling out South African President Cyril Ramaphosa for praise. “South Africa’s analytic work and transparency and sharing its results was indispensable in allowing a swift global response.”

Late last week, von der Leyen successfully pushed the 27-nation EU to agree to ban flights from seven southern African nations, similar to what many other countries are doing.

Cases have been reported in such places as Canada, Germany, Britain, Belgium, Denmark, the Netherlands and Portugal, where authorities identified 13 omicron infections among members of the Belenenses professional soccer team.

Taking no chances, Japan, which has yet to detect any omicron cases, reimposed border controls that it had eased earlier this month.

“We are taking the step as an emergency precaution to prevent a worst-case scenario in Japan,” Prime Minister Fumio Kishida said.

Israel likewise decided to bar entry to foreigners, and Morocco said it would suspend all incoming flights for two weeks.

Britain reacted by expanding its COVID-19 booster program to everyone 18 and older, making millions more people eligible. Up until now, booster shots were available only to those 40 and over and people particularly vulnerable to the virus. The U.K. has reported about a dozen omicron cases.

Despite the global worry, doctors in South Africa are reporting patients are suffering mostly mild symptoms so far. But they warn that it is early. Also, most of the new cases are in people in their 20s and 30s, who generally do not get as sick from COVID-19 as older patients.