IHU: Why we shouldn’t yet be worried about the latest new Covid variant

IHU: Why we shouldn’t yet be worried about the latest new Covid variant
‘Not one worth worrying about too much’: Variant identified in France predates Omicron yet has failed to take off globally in the same way

Another day, another variant. While the reaction to Omicron was immediate and one laced with genuine fear and concern, the emergence of a new strain in southeastern France has been met with a shrug of the shoulders by many scientists.

On paper, B.1.640.2 looks problematic. Like Omicron, it has multiple mutations, 46 in total, many of which are located in its spike protein – the part of the virus responsible for gaining entry to human cells.

U.S. reaches 1 million daily Covid cases amid spread of omicron variant
Washington, D.C., and Florida have seen the largest jump in new cases in the last two weeks.
The United States hit 1 million new Covid-19 cases on Monday, according to data compiled by NBC News, underscoring the threat of the omicron variant as the third year of the pandemic gets underway.

Washington, D.C., and Florida have had the largest jump in new cases in the last two weeks. Washington saw Covid cases increase by 902 percent in that time period, while cases in Florida went up 744 percent, according to an NBC News analysis of state and local health data.

The record-breaking single-day total could be a reflection of delayed reporting as a number of states did not announce data on New Year’s Eve and during the holiday weekend.

The Centers for Disease Control and Prevention estimates that the omicron variant now accounts for up to 95 percent of U.S. test samples reviewed last week, according to modeled projections. But that projection could differ from later estimates.

Dr. Tedros Adhanom Ghebreyesus, the director-general of the World Health Organization, warned last month that the omicron and delta variants were fueling an alarming trend.

“I am highly concerned that omicron, being highly transmissible and spreading at the same time as delta, is leading to a tsunami of cases,” Tedros said at a news conference in Geneva on Dec. 29.

However, even as U.S. case counts rose in recent weeks, reported deaths did not appear to be surging — suggesting that omicron leads to a more mild form of Covid, especially among people who have been vaccinated.

“The general trend that I’m seeing is, if you’re boosted and you get Covid, you really just at worst end up with bad cold symptoms. It’s not like before where you were coughing, couldn’t say sentences and were short of breath,” Dr. Matthew Bai, an emergency medicine physician at New York City’s Mount Sinai Queens, told NBC News late last month.

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“There are obviously exceptions — like if you start out with a very weakened immune system, your immune response won’t be as strong with a booster. But in your average person, a booster’s definitely going to make a difference,” Bai added.

The average number of daily hospitalizations in the U.S. was 93,281 as of Monday, an increase of 35 percent in the last two weeks.

In a separate development Tuesday, Maryland Gov. Larry Hogan declared a 30-day state of emergency to combat a rise in Covid cases, mobilizing 1,000 members of the Maryland National Guard to help state and local health officials.

French Scientists Discover New Coronavirus Variant ; Researchers Say Omicron Easily Avoids Immune System
As the world continues to struggle with the rapid spread of the omicron variant of the coronavirus and the still-lingering delta variant, scientists in France said they have discovered a new variant that contains multiple mutations.

Experts at the IHU Mediterranee Infection in Marseille say they discovered the new variant back in December in 12 patients living near Marseille, with the first patient testing positive after traveling to the central African nation of Cameroon.

The French scientists said they have identified 46 mutations in the new variant, dubbed B.1.640.2, that could make it more resistant to vaccines and more infectious than the original virus.

The results were posted on the online health sciences outlet medRxiv, which publishes studies that have not been peer-reviewed or published in an academic journal. B.1.640.2 has not been detected in other countries or been labeled a “variant of concern” by the World Health Organization.

Meanwhile, a new study out of Denmark reveals omicron is better at avoiding a person’s immunity even if they are vaccinated against COVID-19. Researchers at the University of Copenhagen studied 12,000 households and discovered that omicron was between 2.7 to 3.7 times more infectious than delta among vaccinated Danes.

The study, which has not been peer-reviewed, also found that unvaccinated individuals are more likely to transmit the coronavirus than those who had been fully vaccinated and received a booster shot. Vaccine effectiveness against symptoms was reduced to around 40% against symptoms and to 80% against severe disease when dealing with omicron, while booster shots improved those numbers to 86% against symptoms and 98% against severe disease.

“Our findings confirm that the rapid spread of the Omicron variant primarily can be ascribed to the immune evasiveness rather than an inherent increase in the basic transmissibility,” the researchers wrote.

The omicron outbreak continues to wreak havoc on cities and countries around the world, pushing enormous strains on health care systems.

Authorities in Australia’s most populous state of New South Wales reported more than 23,000 new COVID-19 infections on Tuesday, breaking the previous record of 22,577 new cases set just on New Year’s Day, with 1,344 hospitalizations, breaking the record of 1,268 hospitalizations seen back in September at the height of the delta outbreak. Neighboring Victoria state posted 14,020 new cases Tuesday, breaking Monday’s record of 8,577 new cases.

The states of Queensland, South Australia and the island of Tasmania also reported record numbers of new infections Tuesday, pushing Australia’s total number of COVID-19 infections past the milestone 500,000 mark.

The surge has led to a critical shortage of staffers at hospitals across Australia, with healthcare workers furloughed after contracting the virus. Testing centers have also been forced to shut down either because of staffing shortages or a backlog of tests. But Prime Minister Scott Morrison has rejected calls for the federal government in Canberra to provide free rapid antigen tests to all Australians.

Another Chinese city has entered into a full lockdown after three people tested positive for COVID-19 in recent days. Authorities have ordered all 1.2 million residents of the central city of Yuzhou to remain in their homes, and have closed nearly all public facilities including schools, transportation and shopping malls.

The strict lockdown measures in Yuzhou are similar to those imposed in the northwestern city of Xi’an, where 13 million residents have been confined to their homes since December 23 due to an outbreak of the delta variant that has now sickened more than 1,600 residents. The lockdowns are part of Beijing’s “zero-COVID” strategy that includes mass testing, lengthy quarantine periods and snap lockdowns.

In Hong Kong, chief executive Carrie Lam announced Tuesday that the semi-autonomous city is extending its vaccine requirements for public venues. Lam said that all Hong Kongers will have to show proof of vaccination to enter museums, public libraries and schools effective February 24. The expanded vaccination mandate, which already covers entertainment venues, was imposed in the wake of Hong Kong confirming its first omicron infection cluster.

And the United States posted 1,082,549 new COVID-19 infections Monday, setting a new global one-day record, according to the Johns Hopkins Coronavirus Resource Center. The numbers are nearly double that of the previous record of about 590,000 set just last week, driven mostly by the omicron variant.

Some information for this report came from the Associated Press, Reuters and Agence France-Presse.

 

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