Six cases of Deltacrone coronavirus infection detected in Russia


In Russia, six cases of “deltacron” (a hybrid of coronavirus strains “delta” and “omicron”) were identified. This was reported today, August 11, in the press service of Rospotrebnadzor,

“As of August 10, 2022, the VGARus database (the national database of genomic sequences of the SARS-CoV-2 virus) has loaded six genomic sequences related to the indicated variant (hybrid of strains – approx. TASS) COVID-19. The sequences are dated July and early August. Five samples for research were taken in St. Petersburg, one in Moscow”, – the message says.

The department noted that this option refers to non-dominant lines of coronavirus infection and currently does not have a significant impact on the epidemiological situation in the two cities. The epidemiological situation in Moscow and St. Petersburg is similar to the situation in Russia as a whole, it is characterized by the active spread of the BA.4 and BA.5 lines with the prevalence of the BA.5 variant in the strain composition. Patients with a hybrid variant of the coronavirus suffered a mild illness, they did not need hospitalization.

At the moment, there is no reason to believe that the hybrid variant leads to a more severe course of the disease or is more transmissible. In general, the appearance of hybrids is not among the unique phenomena, the process is characteristic of many viruses and is one of the evolutionary-adaptive mechanisms. “Previously, hybrid strains of COVID-19 were recorded in Europe, the USA and Latin America. They have not received wide distribution in the population” , the message says.

The discovery in Russia of a hybrid of “omicron” and “delta” was previously reported by RBC, citing an American geneticist. Dmitry Pruss.

“We note that recent reports on the detection of a hybrid strain in Russia were given with reference to an American geneticist. We drew attention to the indifference of American scientists to the epidemiological situation in Russia. We recommend that our colleagues closely monitor what is happening in their own country, because the situation with COVID-19 in the United States remains quite tense,” — noticed in Rospotrebnadzor.

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