Rapid influenza a ag: the latest variant of the new crown "Delta Chron"

Rapid influenza a ag: "Delta Chron" has been confirmed, and at least 17 people have been infected worldwide

According to a report by NBC on March 11, the World Health Organization confirmed that a new variant of the new coronavirus pneumonia virus has now emerged: "Delta Chron", which combines the new coronavirus delta variant and Omikron variant. variation in the body. According to Reuters, at least 17 patients are now infected with the "Delta Chron" variant, and 101 are suspected; 2 cases have been confirmed in the United States.

On March 11, local time, Dr Maria Van Kerkhove, WHO's new crown virus technical director, said: "Denmark, France and the Netherlands have reported infections with the 'Deltacoron' variant. cases.”

The French researchers pointed out that the new hybrid variant "Delta Chron" was produced by recombination. Recombination is when two different variants of a virus infect a patient at the same time, exchanging genetic material to produce new offspring. The paper, published in medRxiv, states that the "backbone" of the delta chron variant comes from the delta variant; its spike protein, the protein that enables the virus to enter host cells, comes from the omicron variant.

In response to the first confirmed report of the "Delta Chron" mutant strain, the World Health Organization responded that the newly reported mutant virus, that is, a recombination containing Delta and Omikron, also contains the subtype BA of Omikron. The reorganization of 1 and BA.2 is a normal phenomenon and can be seen as a predictable emergency.

French researcher Philippe Colson said that because of the low number of cases now, we have no way to draw conclusions about the contagiousness of the "Delta Chron" variant and whether it can cause serious disease. In fact, as early as the beginning of this year, researchers from the University of Cyprus published a paper saying that they found a recombinant new coronavirus strain of Delta and Omicron, whose genes are closer to the Delta strain, but has a large number of Omic Unique variation of Rong strains. Therefore, the strain was named "Deltacron" by the researchers.

The WHO official said: "Many countries are currently controlling the new crown pneumonia virus very well, but due to the rapid spread of the Omicron variant and the high number of mutations, it is a challenge for researchers, scientists, and public health professionals to study." The Delta Chron' variant brings convenience."

According to USA Today, epidemiologist William Hanage of the Harvard School of Public Health said it is too early to focus on the Delta Chron variant. "It's just a new variant. If it's not widespread, people don't need to worry," he said.

According to The Guardian, only a handful of cases of infection with the Delta Chron variant have been found so far, and there is not enough data to say how severe the variant is or how much the vaccine can protect it.

So far, scientists have not found any change in the severity of the new variant compared to previous coronavirus variants, but many scientific studies are underway, Maria van Kerckhoff said in a news conference. middle.

Among European countries, the United Kingdom, the Netherlands, Germany, Switzerland and Italy all returned to an upward trend in the number of cases last week, according to the latest data from Johns Hopkins University.

Last Thursday, Germany once set an all-time record of more than 300,000 confirmed cases in a single day. The average daily death toll in Germany exceeded 200 last week; The number of people has increased again; the number of confirmed cases in the Netherlands is also soaring rapidly. From February 27 to March 12, the number of confirmed cases per million people in the Netherlands rose from 1,956 to 3,955, an increase of more than 100%.

Eric Topol, MD, has warned that the next wave of epidemics in Europe has already begun after studying the European epidemic data.

At the same time, the outbreak in Asia is also worrying. South Korea, with a population of 51.3 million, had nearly 2 million infections in the past week, a 44% increase from the previous week. On Saturday, the number of confirmed cases in South Korea in a single day was 383,651, setting a single-day record.

In addition, Vietnam, with a population of 98.8 million, reported a total of 1.108 million new cases last week, an increase of 35% month-on-month.

According to data tracked by Worldometers, last week, Germany, South Korea and Vietnam accounted for 41.1% of the world's total cases of infections, while the combined population of these three countries accounted for only 3.9% of the global population.

At present, the new crown virus strain that poses the greatest threat to the world is still "Omicron". In the past week, the global infection rate has increased by 6% month-on-month. The number of infections in many European countries has risen again, and the number of infected cases in Asia has been the highest Not too high. Experts have warned that the next wave of epidemics in Europe has already begun.