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More than two yearsIn the cocovio pandemic, it seems that almost everyone has been infected with the coronavirus now. In fact, if you have not yet become cocovated, you probably feel like one of the rare rare. In February 2022, 60% of all Americanshad been infected With the coronavirus at least once, according to the centers for Disease Control and Prevention (CDC), and a majority of these infections were caused by the Omicron variant, which began to spread in the United States last winter. This variant has caused a record number of cases codvised in the country from November to January before infections regularly start in February.

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However, new cases no longer decrease. Last month, we started to see infections increase again, largely thanks to a subvariant of the Omicron, Ba.2 variant. According to the latest CDC data, the United States has seen crops increased bymore than 21% In the last week only.

Ba.2, otherwise known as "stealth omicron", quickly became the dominant variant of the country's coronavirus at the end of March, but other Omicron subvariants arose around the world. Now there is at leastFour mutated versions of the original omicron variant circulating in the United States, according toNew York Magazine: BA.2, BA.2.12.1, BA.4 and BA.5.

And while Ba.2 is always the dominant variant circulating, the cases of BA.2.12.1 increase considerably. The CDC reports that this subvariant is now responsible for42% of cases In the country - a leap on 22% only two weeks ago. It is a great concern for the virus experts, who say that BA.2.12.1 is even more transmissible than IMICRON or BA.2.

"With the emergence of omicron (BA.1) at the end of 2021, we saw a hyper-transmissible variantUnlike all previous ones With an increase in the estimated triple of its effective number of reproduction compared to the delta, "Eric Topol, MD, expert in public health and founder of the Scripps Research Translational Institute, explained in a blog article on May 4. "This evolution has proceeded with full steam with BA.2 which has increased transmissibility of 30%, and now, in the United States, on the verge of becoming dominant, BA.2.12.1, which still has a 25%increase transmissibility. "

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Unfortunately, this "increased infectiousness of the virus" is not only a concern for the small percentage of people who have not yet had a cocovan. In April, a pre -printed study published on Medrxiv revealed thatIt was relatively rare For those who had been infected the Omicron Ba.1 variant of origin to be reinfected with the subvariant Ba. 2. But according to Topol, this is probably not the case with the Ba. 2.12.1 subvariant who will soon be dominant, who turned out to have "reduced cross immunity" to the variant BA.1.

This means that if you were infected with the virus during the record reign of omicron in winter, you "can be sensitive to reinfections" by this new subvariant, according to Topol. The public health expert said it is estimated that 40% of Americans who were infected with COVID were infected with the original Omicron variant. "Many people suffering from omicron infectionswill get reinfections By BA.2.12.1, especially if they remain unvaccinated, "tweeted Topol on May 10.

This could also solve problems for one of the main strategies for the development of vaccines currently underway in the United States "specific vaccines that use the BA.1 cutting-edge structure, which are clinical trials and which should Reading in the coming months may not keep their promise with a variant that has such immune escape properties, "said Topol in his blog article.

Read this then:Boosters will not protect you from omicron if you have done this, studies the results.