Covids are spreading around the world Make new infections, rebound – Scientists keep an eye on New Wave
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Covids are spreading around the world – On March 29, Reuters reported that The coronavirus disease 2019, or COVID-19, caused by the BA.2 or stealth mutant omicron virus, can now be spread anywhere in the world. As a result, the number of new infected people around the world continued to rise.
Scientists have speculated that the stealth (invisible) omikron mutant virus is the main cause of the number of infections in many countries across Asia. and Europe returned to rebound higher again Including raising concerns that there may be a new wave of outbreaks in the United States.
spreading faster than before
The World Health Organization (WHO) says the BA.2 mutant omikron virus accounts for nearly 86 percent of new infections. They are more invasive and contagious than traditional omikrons, such as BA.1 and BA.1.1, but there is no evidence of a more severe disease.
The new strain also makes the vaccine against COVID-19. that are in use today also has a reduced efficiency Compared to the previous species Alpha. or original from Wuhan, China. However, the effectiveness of protection can be restored if booster vaccination is given.
global overview
Currently, the mutant Omikron virus, type BA.2, is presumed to be the main cause of ongoing outbreaks in China. And many other countries in Europe such as Germany and the United Kingdom (England), resulting in some nations starting to have more new infections.
The reason why scientists dubbed the BA.2 species “stealth”, which means invisible. This is because this strain is more difficult to detect than the original omikron. It cannot be detected by PCR, but it can be detected by nucleotide sequence analysis of the genetic material. which is not as widely used as PCR
Can it be attached again?
One of the main concerns among scientists about BA.2 species is its ability to relapse in individuals who have previously been infected with original omikron. After many nations encountered a double peak phenomenon The two types of infection have the same epidemic rate.
However, data from the UK and Denmark show that although omikron can re-infect people who have previously been infected with other mutations such as Delta, BA. primitive omikron) very little (about 1 in tens of thousands).
Scientists believe that the most reasonable explanation for the BA.2 outbreak is that it occurred while countries around the world ended slowdown measures.
Dr Andrew Pekosz, a virologist at Johns Hopkins University in the United States, said: “This virus is likely to have spread without our knowledge. Or maybe it’s an epidemic when we start to stop wearing masks.”
Regardless of the cause of the outbreak But the arrival of BA.2 reflects that the virus causes COVID-19. that is still dangerous especially for people who have not been vaccinated against or not getting enough including risk groups counted as COVID-19 It’s also a big public health problem. and there is still no sign of calm