Omicron: What are the variant's symptoms?

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In just a matter of weeks, cases of the omicron COVID-19 variant have been detected in countries around the world – including the U.S. – forcing health leaders to take action. 

Much remains unknown about the new variant, but nations like the U.S. have acted quickly to respond, implementing controversial travel restrictions and updating mask-wearing guidance.

The concern is that the highly mutated omicron can evade immune response – in addition to its transmissibility.

It is not certain where or when the variant first emerged, although Nigeria’s national public health institute said Wednesday it had detected the variant in a sample it collected in October.

Travelers wait for documents checking, at the arrival terminal of Soekarno Hatta International airport, as the country bans the arrival of travellers who have been in eight African countries to curb the spread of the new omicron variant of the coronavirus, in Tangerang, near Jakarta, Indonesia, November 29, 2021. 
( REUTERS/Willy Kurniawan/File Photo)

“There is currently no information to suggest that symptoms associated with omicron are different from those from other variants,” the agency said.

According to the U.S. Centers for Disease Control and Prevention (CDC), those symptoms include fever or chills, cough, shortness of breath or difficulty breathing, fatigue, muscle or body aches, headache, a new loss of taste or smell, sore throat, congestion or runny nose, nausea or vomiting and diarrhea.

It remains unclear if infection with omicron causes more severe disease and it is set to take weeks to determine whether current coronavirus vaccines are still effective against it. 

Vaccine makers have said they are ready to develop new vaccines.

U.S. officials say vaccines will offer at least some degree of protection and urged Americans to get a vaccine and get boosted.

To date, delta is still by far the most predominant form of COVID-19, accounting for more than 99% of sequences submitted to the world’s biggest public database.

The Associated Press contributed to this report.

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