Experts warn that these factors have caused "perfect storms", which may lead to the emergence of new mutant strains in coronary virus.The chairman of the French Government Science Committee said that the scientific community believes that if the virus continues to spread, the new strains may appear in autumn or earlier.

(Paris/Washington Ontologns) The crown disease epidemic in European countries has been re -burns. Experts said that this is because of the relaxation of epidemic prevention measures and the immunity caused by the vaccine gradually declined, plus, plusThe infectivity of Omikon subtype BA.2 is more contagious.

Experts warn that these factors have caused a "perfect storm", which may lead to the emergence of new mutant strains in coronary virus.The chairman of the French Government Science Committee said that the scientific community believes that if the virus continues to spread, the new strains may appear in autumn or earlier.

The confirmed cases have been declining for more than a month, but recently, cases in the United Kingdom, France, Germany, and Italy have risen rapidly.As far as France is concerned, since the government has lifted most of the epidemic prevention measures on the 14th, the increase in daily increasing cases has increased by more than one -third within a week.

In Germany, despite the daily increase in a single -day high record of nearly 300,000 on Friday, the government still decided to remove the national epidemic prevention law on the weekend.However, most of the German governments have decided to maintain epidemic prevention measures.

Italy, whose confirmed cases have also risen, announced that almost all epidemic prevention measures will be lifted before May 1st.

At present, one of 20 people in the UK has one person diagnosed, but the government has lifted the last batch of international travel restrictions on Friday.

Austrian Austrian that was unlocked only a few weeks ago. Due to the rising cases of diagnosis, the public used the FFP2 mask equivalent to the N95.

Some people believe that the heating of the epidemic is caused by the relaxation of the epidemic prevention limit prematurely, but epidemiologists also pointed out that the higher infectious infection of the Omikon subtype BA.2 is also one of the factors.This mutant strain has become a mainstream virus strain in many countries.

Omikon includes sub -type strains such as BA.1, BA.2.BA.2 is difficult to detect, sometimes also known as "hidden Omikon", and the infectious power is estimated to be about 30 % than BA.1.

Virusist Lawrence Yang said that European epidemic prevention measures are relaxed and the immunity brought by vaccines has gradually decreased. In addition, BA.2 is popular, making Europe a "perfect storm" in the face of the epidemic.He said: "The abolition of epidemic prevention measures to increase the spread of BA.2 may also evolve other mutant strains."

may not have antibodies after the healing of children and adolescents who have not been vaccinated.

Anto Wan Foio, director of the Global Health Research Institute of the University of Geneva, mentioned that in addition to the rising cases caused by BA.2, some studies have shown that the concentration of crown disease epidemic and suspended particles in the air have high concentrations in the air."Strongly associated."

On the other hand, research in Texas in the United States shows that most children and adolescent children who have not vaccinated vaccines may not have crown disease antibodies in the body after the cure of crown disease.

Researchers have tracked investigations of children and adolescents who are 5 to 19 years old and have been infected with crown disease since October 2020, asking them to provide blood samples every three months.

The survey results show that only one -third of the first blood samples participating in the researchers contain infected antibodies.Six months later, one -third of these people still have antibodies in half of the people.