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The Indian-derived strain of Covid-19, called Delta, was first discovered in 2020. Month of October. The city of Nagpur may become dominant in the world, say representatives of the World Health Organization. Currently, it is very widespread in more than 80 countries, last week it was also established in Lithuania.
Marius Strioga, an immunologist oncology at the National Cancer Institute (IMI), told The News of the Day program that about 96-98 percent of it is this variety that is causing the new cases that are being identified. In Portugal, the figure is 96%. new cases.
“This means that it is able to push the Alpha strain to compete,” said Strioga.
According to the scientist, if there will be trips to and from these states, this variety will inevitably come.
“It just came to our attention then. It is more contagious than the British strain of Alpha and is associated with a 2.2-fold increase in the need for hospital treatment. It is not yet known whether it is associated with an increase in mortality.” Strioga said.
He said vaccination is necessary to avoid a serious new wave.
“The data shows that Pfizer has 88 percent protection against symptomatic disease after two doses, and Astra Zeneca has 67 percent protection.
If we talk about protection against hospitalization, if two doses of the Pfizer vaccine are 96%. the protection is “Astra Zeneca – 92 percent after the second dose,” Strioga said.
After the first dose of the vaccine, the protection is significantly less. After the first dose of Pfizer, protection against symptomatic disease is only 36%, and after the first dose of Astra Zeneca it is 30%.
“It takes two doses to protect against these strains,” Strioga said.
There is a debate about the third vaccine.
According to the scientist, only a sufficiently high amount of antibodies can protect against the Delta, Beta (African) and Gama (Brazilian) strains.
“Due to the fact that booster vaccination issues are now being discussed, we and the Prime Minister have had such a discussion in the expert council. Some experts are of the opinion that clinical trial data should be awaited. And to see, maybe, when we look at whether vaccinated people start to get sick and sick.
I suggest not waiting for the clinical trial data and deciding to say that we are prescribing the third dose nine months after the first, ”Strioga said.
The doctor does not rule out that perhaps at that time the immune response in some is still sufficient.
“We won’t hurt people with that,” Strioga said.
Offer fewer trips
The scientist says that fewer trips would be needed to prevent the variety from spreading to us.
“My advice would be to travel abroad as little as possible, agree with relatives not to travel here from abroad,” Strioga urged to spend the money saved on vacations at his beach.
According to him, this variety seems to be less sensitive to high temperatures. Therefore, if travelers bring it to Lithuania, “there is a very real spread scenario.”
According to the IMI specialist, it is believed that this variety should begin to dominate in Europe within two months.
“In two months, it should be the dominant one at the moment. The British variety was now the most prevalent in Europe. This variety competitively displaces the British.
We do not know how many more can come, a Brazilian can come, if there is a lot of desire to travel to South America, an African can also come. “The only weapon is the most intensive vaccination possible,” Strioga said.
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