Last week new figures showed Covid-19 infections in the country Great Britain Increased by 43 per cent in the week following the Platinum Jubilee celebrations, two new sub-variants are likely to be behind the sudden rise.
In addition, about 1.4 million people in the UK had the coronavirus in the week ended June 11, up from around 990,000 the previous week.
Speaking at an Independent Scientific Advisory Group briefing on emergencies (SalbiIn May, Professor Christina Pagel said: “A new wave is beginning now.”
He added: “This month we will have a new wave of infections. Now we hope it will not be as high as the previous two waves and may be lower. But we can not count on that and in any case, we are going to see more people get infected. ”
Here are the most contagious variants of Covid-19 since the onset of the pandemic:
The new coronavirus SARS-CoV-2 first appeared in Wuhan, China in 2019. By March 2021, Covid-19 had spread around the world, causing national closures and border closures as it faced a global pandemic of global health.
Currently, there are about eleven options being monitored, including the well-known Alpha and Delta Options.
But the only strain that is currently a concern is the Omicron family. This means it is more contagious, can cause more serious illness, and may be less sensitive to public health measures.
The alpha variant was first discovered in the UK, and the worry variant in December 2020. By December 2021, it had been identified at 192 locations worldwide.
The alpha variant has 17 mutations compared to the original Wuhan strain.
It is about 1.5 times more contagious than earlier Covid variants and is at risk of death About 1.6 times moreaccording to BMJ.
Originally identified in India in late 2020, the Delta Strain swept the globe and is believed to have brought the third wave of the UK in the fall of 2021.
According to data analyzed by the ONS, the risk of death with Covid-19 is estimated to be 67 per cent lower than after delta after Omicron infection – thus making the delta more lethal.
research The The Lancet It has also been found that the Delta variant may result in a higher health care burden than with the alpha strain, as it is reported that people in England are twice as likely to be hospitalized with the Delta as with the Alpha strain.
Omicron settled in the UK at the end of 2021, which hampered Christmas and New Year plans.
It was first discovered in South Africa in November 2021 and now has several sub-variants, two of which are currently of concern to other waves.
In mid-May, the UK Health and Safety Agency (UKHSA) upgraded the Omicron BA.4 and Omicron BA.5 classifications of Covid-19 variants to disturbing variants. Previously, BA.2 – also known as Stealth Omicron – was a featured option in the UK.
Omicron is more contagious than the original virus for the first time in Wuhan and Delta.
Its ability to inhibit immunity may be due to the fact that more than 30 mutations in the variant are at the peak of the virus that attaches to human cells.
However, this variant is generally milder than infections caused by the Delta variant, although it can still cause severe infections and death.
At a SAGE conference in January, they cited an analysis by Imperial College London suggesting a 35-65 per cent reduction in hospitalization risk compared to the last wave compared to Delta for those who had two doses of the vaccine.
In addition, during the peak of the Omicron wave, Empire researchers discovered that The risk of re-infection with Omicron is 5.4 times higher Than the Delta variant.
“The Omicron variant is responsible for the largest increase since 2019,” said Lisa Maragakis, senior director of infection prevention at Johns Hopkins Hospital in Baltimore.
According to preliminary data from the University of Tokyo and colleagues Kay Sato, the new BA.4 and BA.5 strains have more in common with earlier, more dangerous alpha and delta variants as they may have evolved to improve lung cell infection. .
Whereas, the highly contagious original Omicron is directed at the upper respiratory tract tissue, which is why infections can be milder in most people.
Covid test: Most infectious variants as the Omicron strain sees the case in the UK continue to rise
Source link Covid test: Most infectious variants as the Omicron strain sees the case in the UK continue to rise