What we know about the COVID-19 Omicron variant

Final week, the world was shaken by information of a worrisome new coronavirus variant referred to as Omicron. By Monday, President Joe Biden assured Americans, “This variant is a trigger for concern, not a trigger for panic.” Public well being consultants say it should take weeks to get the full image of how this virus mutation is affecting human well being, however in the meantime there are steps we can take to mitigate our danger of an infection.

Since the World Well being Group labeled the Omicron a variant of concern, we have realized just a few issues. It has 50 mutations—way over some other variant—in line with The New York Times. Importantly, 30 of these mutations are in the spike protein, the a part of the virus that provides it the means to latch on to human cells. To this point, Omicron has been recognized in 19 international locations, in line with CNN.

What we don’t know is whether or not the virus is extra transmissible, if it should make individuals extra sick, or if the mutations make it proof against present vaccines (although Moderna CEO Stephane Bancel says he thinks the firm’s vaccine could also be much less efficient in opposition to Omicron). Whereas there are causes to be involved, public well being consultants remind us there are easy precautions we can take to deal with this new variant of COVID-19.


“Put on masks in indoor public locations, be sure to’re vaccinated, get boosted if you happen to haven’t been, after which take a deep breath—as a result of I promise we’ll know extra in a few weeks,” says Megan Ranney, emergency room physician and director of the Brown-Lifespan Center for Digital Health in Rhode Island. 

Even with a brand new variant doubtlessly on the rise, Individuals have instruments for coping with COVID-19 that we didn’t have final 12 months. Masks and vaccines have been proven to curb transmission. Quickly, the Meals and Drug Administration might approve medicine from Merck and Pfizer which are able to treating hospitalized sufferers with COVID-19, giving the U.S. one other device to fight the virus. On Tuesday, an FDA advisory committee voted in favor of the FDA approving Merck’s antiviral, molnupiravir, although there are a number of unanswered questions, together with whether or not the drug may spur extra virulent types of COVID-19. Pfizer has an identical drug pending FDA assessment.

A number of traces of protection

Whereas there’s a danger that present vaccines could also be much less efficient in opposition to Omicron than earlier variants, the antibodies that consequence from inoculation are nonetheless more likely to supply some safety, in line with Alessandro Sette, a professor of immunology at the La Jolla Institute of Immunology. “It’s affordable to imagine it’s going to be neutralizable to a point, with a lower,” he says. However he provides that antibodies should not the solely immune system protection; we even have to think about T cell response. Antibodies forestall COVID-19 from infecting an individual, whereas T cells present injury management. If information exhibits T cell response stays robust—a giant if, Sette acknowledges—that signifies that whereas vaccinated individuals might turn into contaminated, they may have a much less extreme manifestation of the illness.

A very powerful factor, he says, is that folks get vaccinated: “Lowering the viral circulation is the neatest thing that we can do.”

Mass international vaccination is critical so as to forestall the emergence of recent variants and to gradual the unfold of present variants of concern. “Over time, uncontained unfold and accelerated evolution in immunocompromised hosts may drive sufficient mutation to scale back the efficacy of present vaccines significantly, and even totally,” wrote the Scripps Analysis Institute’s Dennis R. Burton and Eric Topol in the scientific journal Nature in February.

We’ve been fortunate it’s been six, seven months since we had our final unhealthy variant.”

Dr. Megan Ranney, Brown-Lifespan Heart for Digital Well being

Not fairly 60% of all U.S. residents have been vaccinated and solely 20% have been boosted, in line with information from the Facilities for Illness Management and Prevention. Charges fluctuate significantly throughout areas: For instance, 50% of Idaho residents have acquired one dose of a vaccine, whereas 84% of Puerto Ricans have.

Globally, the distinction is much more stark. Information from the World Health Organization exhibits that lower than 1% of the inhabitants in the Democratic Republic of Congo has acquired even a single dose of vaccine. “This [Omicron] variant reemphasizes the level that, for higher or worse, what occurs in a single [region] immediately spreads to what occurs to others with regards to infectious illness,” Ranney says.


To this point governments have targeted on journey restrictions to ease unfold, which many public well being consultants imagine is just too little too late (South African President Cyril Ramaphosa has also said the bans successfully punish the nation for sequencing the virus and sharing its information). The U.S. is at the moment limiting journey from eight African international locations.

In the meantime, Ranney’s hope is that Omicron will assist drive vaccination globally. “We’ve been fortunate it’s been six, seven months since we had our final unhealthy variant,” she says. We may see extra of them if extra individuals aren’t vaccinated.

Ranney says if Omicron seems to be extra infectious and extra extreme than earlier variants of COVID-19, it will likely be incumbent on the authorities to ramp up testing, masking, vaccinating, and offering further assist for well being techniques. Till we know extra, she says, we ought to get vaccinated and put on masks in public areas however in any other case go about our lives.

“I get a whole lot of questions from people, together with my circle of relatives, about whether or not we ought to begin pondering about canceling the holidays, and what I’m telling everybody is not any, not but. Give it every week or two,” Ranney says. “We’re going to know a lot extra in two weeks.”