Covid booster dose is important for Omicron variants, which is why


US President Joe Biden was vaccinated with a coronavirus disease (COVID-19) booster on September 27, 2021 at the South Court Auditorium in the Eisenhower Executive Building in the White House, Washington, USA.

Kevin Lamarck | Reuters

As Omicron’s ghosts approach during the holiday season, governments around the world are desperately deploying Covid-19 booster shots to increase people’s protection against more contagious variants.

It’s been less than a month since it was new and significantly mutated. COVID The Omicron strain was detected by the World Health Organization and designated as a “variant of concern”. Earlier studies have shown that the immunity provided by the Covid vaccine is reduced after about 6 months. In short, booster shots are essential to increase defense antibodies to combat potential infections.

With the advent of Omicron, booster shots have become even more important. This is because of the urgency of the situation, many early studies published prior to peer review showed that the Covid vaccine turned into an Omicron variant compared to the globally predominant Delta and other mutants. This is because it showed that the effect was low.

However, the same study shows that three doses of vaccine (two vaccinations and booster immunization) significantly improve the level of protection against Omicron.

Here’s a summary of the studies released so far and what they’ve found:

First findings from South Africa

Pfizer-BioNTech Results

UK Health Security Agency

The UK Health and Safety Department released a report last FridayCiting the first findings from actual studies, he said that the two-dose course of the Covid vaccine was significantly less effective against the Omicron variant than the Delta variant.But that’s “In the early stages after booster immunization, 70-75% of moderate to high vaccine efficacy is seen.”

The booster dose evaluated was the Pfizer-BioNTech Shot, and participants in the study were vaccinated with either the Oxford University-AstraZeneca vaccine or the Pfizer-BioNTech vaccine in the first two doses.

However, UKHSA warned that it would take several weeks before the efficacy of Omicron for serious disease was revealed, adding that “the duration of recovered protection after mRNA boosting is unknown at this point.” ..

Moderna and Pfizer-BioNTech Shots are mRNA (or messenger RNA) vaccines that teach cells how to make proteins that provoke an immune response in the body. This reaction produces antibodies that help protect people from Covid infections.

Studies from Israel

More research emerged from Israel on Saturday, and researchers also said Pfizer――――BioNTech The vaccine provided important protection against Omicron.

In this study, conducted by the Sheva Medical Center and the Central Virology Institute of the Ministry of Health, the blood of 20 people who were vaccinated twice 5-6 months ago was boosted a month ago. Compared to the same number of individuals.

“People who received a second dose 5 or 6 months ago do not have the ability to neutralize Omicron, but have some ability to neutralize Delta. [strain]”Giri Legev Yochai, director of the infectious disease unit in Sheva, said the weekend’s Reuters news agency.

“The good news is that with booster doses it increases about 100 times. There is significant protection for booster doses, which is lower than the ability to neutralize deltas, about a quarter,” she said. rice field.

Oxford University Studies

Researchers tested people’s blood samples 28 days after the second dose of either vaccine. When Omicron was introduced into these samples, scientists reported a “substantial reduction” in neutralizing antibodies that fight Covid.

The effectiveness of booster shots for severe infections has not yet been confirmed, but the number of cases of Omicron in Europe, the United States, and southern Africa where it was first detected is increasing rapidly.

Early studies and anecdotal evidence suggest that Omicron is more contagious, but it causes less serious infections. Two doses of the Covid vaccine have already been shown to significantly reduce the risk of severe infection, hospitalization, and death when faced with previous Covid variants, reducing the risk of hospitalization due to Omicron infection. There was further evidence that it would be useful.

On Tuesday, a major real-world study from South Africa found that two doses of the Pfizer-BioNTech vaccine provided 70% protection against hospitalization and 33% protection against infection during the country’s recent surge in cases. Suggested, Reuters reported.. Researchers conducting the study warned that the findings should be considered preliminary.

Booster Rush

Now the government is in the race to supply vaccine boosters to the public. Officials in the United States, the United Kingdom, and other regions are urging people to jab before the holiday season.

This happens when Omicron causes a surge in Covid’s case.British scientists estimate that Omicron cases are doubling every 2-3 days He said the country needs to prepare for one million proceedings by the end of the year.

Currently, Omicron variants account for at least 20% of confirmed cases in the United Kingdom, and UK Health Minister Sajid Javid said that new variants account for 44% of London cases and are the major capital in the next 48 hours. Warned that it is expected to be a subspecies. ..

A long line was seen around the UK while people lined up to secure booster jabs, but the country’s vaccine booking website crashed on Monday amid a surge in demand.

The UK Government has announced that it will convene the military, additional volunteers and open more hubs to complete the ambitious booster vaccination campaign. Booster shots can already be booked for people over the age of 30 and all for people over the age of 18 will be booked from Wednesday.

More than 500,000 British people booked booster shots on Monday, Prime Minister Boris Johnson tweeted.

Covid booster dose is important for Omicron variants, which is why

Source link Covid booster dose is important for Omicron variants, which is why

The post Covid booster dose is important for Omicron variants, which is why appeared first on Eminetra.


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