The Omikeron variants BA.4 and BA.5 hit South Africa, BA.2 ravaged the United States, and many countries have been wary of the new crown epidemic in the world for three years, and there is no dissipation trend at present. At present, the new variant of Aomi Kerong has begun to wreak havoc around the world, making many countries more vigilant.
South Africa's National Institute of Infectious Diseases reported that on May 4, there were 6,170 new cases of covid-19 infection; on May 5, there were 9,757 new cases. In the past 48 hours, 7 people have died. Two sub-variants of Omiljung, BA.4 and BA.5, are the main causes of the surge in cases in South Africa. The number of new confirmed cases on May 5 surged more than 50% in a single day compared to may 4, as a result of a surge in infections caused by the two variants.
Such a rapid outbreak broke the calm in South Africa after the ba.1 sub-variant outbreak.
The headache is that the positive rate of the screening population is 25.9%, that is, more than 1/4 of the subjects are positive, which is the highest positive rate in recent months, and the winter in the southern hemisphere is coming, and the epidemic has a great tendency to expand. With 3.8 million people infected and 104,700 deaths in South Africa to date, less than 45% of adults are currently fully vaccinated in South Africa.
With 3.8 million people infected and 104,700 deaths in South Africa to date, less than 45% of adults are currently fully vaccinated in South Africa.
Currently, BA.4 and BA.5 strains have appeared in 20 countries, including South Africa and Europe.
On 28 April, the first case of BA.4 infection was detected in New South Wales, Australia.
On 6 May, a case of new subtype BA.5 infection in Aumicron was detected in Spain.
World Health Organization Director-General Tedros Adhanom Ghebreyesus said on May 5 that the risk of infection of the Omikeron variant was high globally, but it was too early to determine whether these new subvectors would cause more severe disease than other subvectors. But he stressed that early data suggest that vaccination can still prevent the occurrence of serious illness and death.
However, some epidemic prevention experts said that the emergence of new variants means that people who have been infected with the new crown may be re-infected.
Just as BA.4 and BA.5 began to rage, a super-contagious Pseudojung subtype variant, BA.2.12.1, spread rapidly in the United States, resulting in an average of about 60,000 new cases per day and about 320 daily deaths in the United States.
The U.S. Centers for Disease Control and Prevention (CDC) said on May 3 that some early evidence in the United States suggests that BA.2.12.1 spreads faster than the Omilon variant. Omikejong is considered the most contagious strain of the NEW CORONAVIRUS mutation to date, and BA.2.12.1 is the fastest spreading of many Omiljung variants.
On May 6, the CDC issued a notice saying: "The number of new COVID-19 cases and hospitalizations in the United States is on the rise. Although the number of new deaths has continued to decline recently, it is expected to exceed 1 million soon. ”
The BA.2.12.1 variant virus was also detected in the UK in late March this year.
The mutation of the virus is unimaginable, and on April 28, a woman in her 30s in Sendai, Japan, was infected with a new sub-variant of the Omikejong mutant strain, which is a new recombinant virus of BA.1 and BA.2.
Tulio de Oliveira, the first South African scientist to discover the Omicron variant, noted that the BA.1 and BA.2 sub-variants have shown considerable evasiveness, being able to evade the neutralization of a large portion of vaccines or antibodies produced after infection, while the F486V variants in BA.4 and BA.5 may avoid the remaining antibodies.
In other words, the new sub-variant of Omi kerong is "evasive", and the vaccine and antibodies may fail after healing.
CDC Director Valensky said the Omni-Kerong subtype BA.2.12.1 appears to be about 25 percent more pervasive than THE BA.2.
In any case, epidemic prevention is still a major event at present, and it must not be taken lightly. (Inoue Frog)