According to the World Health Organization (WHO), BA.4 and BA.5 variants of Omicron have been released at lower levels in South Africa and many countries in Europe.

Two highly contagious diseases have been discovered in many countries, including Botswana, South Africa, Germany and Denmark, according to Maria Van Kerkov, director of COVID-19 technology at WHO.

BA.4 and BA.5 do not appear to be more contagious or lethal than the original omicron mutation at this time, but could change as diagnosis increases, he added. Van Kerkhove spoke of the need for countries to conduct "robust" genomic analysis that allows them to track and identify differentiated and older microns.

“She is in her infancy. "What we need to do is make sure we can answer those questions by managing our ability to track, share and evaluate," said Van Kerkhov, who spoke on condition of anonymity because he doesn't was not authorized to speak to the media about the WHO. small guide. Your organization's social media platform.

His remarks came a day after the WHO said it had followed up more BA.4 and BA.5 patients in addition to early omicrons such as BA.1, BA.2, BA.3 and BA.1.1 .

+ A new wave of cases

Additionally, the spread of superior BA.2 mutations has increased in many parts of the world, leading to further transmission of Covid-19 in the winter after the unseen resulting again from the first omicron BA.1 variant. BA.2 is now a major international target. According to data from the US Centers for Disease Control and Prevention (CDC), it is most prevalent in the Northeast, accounting for about 85% of new cases in the US and about 92% of new cases.

The first BA.4 standards were drafted in South Africa on January 1. According to a report from the UK's Department of Homeland Security published last week, data shows that "genomic mixing" and the spread of subtypes is not recent. As of April 8, there were 41 cases of BA.4 in South Africa, 3 cases in Denmark, 2 cases in Botswana and 1 case in England and Scotland.

"The total genome count is low, but the ubiquity of the spread indicates that mutations have been successfully submitted," the UK Department of Health said in a statement.

The report also states that since April 8, 27 temporary BA.5s have been announced, all from February 25 to March 25 in South Africa. However, the Botswana Ministry of Health said on Monday it had confirmed BA.4 and BA.5 status in all vaccinated people over the age of 30.50.

According to Reuters, WHO started tracking due to changes in BA.4 and BA.5.

According to the WHO report released on Wednesday, the two mutations include other changes in the continent, part of the disease used to affect the human brain, and specific mutations outside this area. These changes interfere with “the ability to fight infection,” the report says.

+ XE sub-variant

Another omicron sub-variable scientist calls XE at low levels in many countries. XE is a "recombinant" disease that occurs when a person infects one or more viruses and transforms them into a new virus. For XE, it's a combination of the original Omicron BA.1 brand and the latest BA.2, according to Van Kerkhove.

"I don't see a big change," he said. This means that it is no more dead than its leaders.

However, recent data suggests that XE is more likely to be transmitted, according to a report from the UK Department of Health.

However, as new data has been added, the estimate is inconsistent, he noted, meaning "cannot be interpreted as an estimate of the benefits of growth for integration."

The first case of XE has a sample date of January 1. On the 19th it was detected in England, Thailand, India, Israel and more recently in Japan. The United States has yet to report any cases of the disease subtype.

According to new data from the UK's Office of Public Health, the number of new infections has almost doubled in the UK. The number of confirmed XE cases fell from 637 on March 25 to 1,125 through April 5.