British research suggests mass immunity is impossible. 2 injections found, still spreading Delta covids
British Research Clears Group Immunity Is Impossible – On August 19, the Daily Mail reported that A recent study from the University of Oxford, England, on the coronavirus disease 2019 or the Delta-mutant COVID-19. It found that immunity to that group may not be possible with current vaccines.
The indication comes after a study found a sample of people vaccinated with two doses of COVID-19 in the UK, who had a Delta infection had a viral load. or viral load the same as those who have not been injected Indicates that it can transmit the same virus as those who have not been vaccinated.
Chances of getting COVID-19 Delta
Oxford University education More than 3 million swap samples were taken from 700,000 volunteers to determine the efficacy of British vaccines against Delta strains. Which has spread in England since May. It is the largest vaccine efficacy study to date.
This was a study of vaccination status, viral load, and illness by using the cycle time (Ct) index, which is the time to spin up the infection to the detectable point.
trend in the number of infected people
A low Ct indicates a high amount of infection in the specimen, but a high Ct indicates a low microbial load in the specimen. It is one of the standard RT-PCR (Real Time Polymerase Chain Reaction) assays, which is often performed by medical technologists in laboratories.
The results of the study indicated that The group immunity that scientists hope is the goal of vaccination to cover more than 70 percent of the population to reduce the spread of the virus. and reduce the risk of those who are not vaccinated “Can’t do it”
Trend in the number of hospital admissions from COVID-19
However, the researchers confirmed that The UK-based vaccine has been able to effectively reduce the number of people hospitalized with severe symptoms and death. He also noted that those who have been vaccinated will recover more quickly from illness.
The findings are consistent with studies conducted by the British National Public Health Service and the US Centers for Disease Control (CDC) that found viral load between vaccinated and unvaccinated people was similar.
The trend in the number of deaths from covid-19 type Delta type.
Researchers from the University of Oxford also found that even two doses of Pfizer vaccine prevented 82 percent of infection and two doses of AstraZeneca prevented infection. 67%, but after 4-5 months, the efficiency decreases for both camps. (but did not specify how much it was reduced to)
The findings are yet another support for the UK’s third booster vaccination program this fall.
The report stated that Two doses of the Pfizer vaccine were approximately 84% effective against infection, and the two doses of AstraZeneca were 71 percent effective against delta strains. After two weeks, the vaccine was more effective in younger people than older people. Those who have been vaccinated after having been infected have higher protection than usual.
The researchers also compared the data set to data obtained in December. 2020 to May 2021, when the alpha mutant is the most prevalent infection in the UK. It was found that the delta type resulted in a decrease in the efficacy of the vaccine. And those who were vaccinated had almost no different viral load than those who were not vaccinated. different from the alpha type
This means that a person who has been vaccinated with a Delta type may develop mild symptoms such as fever, coughing, sneezing, unlike alpha where a person who is vaccinated if infected will have little or no symptoms. Including having a lower viral load as well
The Oxford University study team said that delta strains may have made the immune system ineffective. This is because the vaccine cannot prevent the transmission of infection to people who have not been vaccinated. But those who have been vaccinated have a much lower chance of becoming so ill that they need to be hospitalized.
Lead researcher Professor Sarah Walker said those vaccinated with alpha infection had a very low viral load that was almost undetectable. and almost no symptoms
However, the viral load of the infected and unvaccinated groups was similar in the delta strain. Even those who have been vaccinated are less likely to be infected.
“Our discovery is important. But it must be noted that the vaccines we currently use (in the UK) are highly effective in preventing serious illness and death. only indicates that by the nature of this delta We probably won’t be able to achieve the group immunity goal.”
“We originally hoped that the minority would be protected from the majority who had been vaccinated. But when this turns out to be The more people vaccinate each other. People who haven’t been vaccinated don’t have a lower risk.
“Our study also confirms that Vaccinating the whole world is very important. Not but only in England,” said Prof. Walker.
Prof Paul Hunter, of the University of East Anglia School of Medicine, said there was now substantial evidence to confirm that all vaccines reduce the risk of serious illness more than reduce the risk of infection. leaven
“We know for sure that vaccines do not prevent infection and transmission. It’s just reducing the risk,” said Prof Hunter.
