Israel and Britain are beginning to capture the reality of vaccines and their effectiveness through studies.
Vaccines provide a firewall but after a while their effectiveness begins to decline.
The most interesting element is especially Israel – and not just through a study but the official Ministry of Health almost systematically demystifies the Pfizer vaccine.
After more than 6 months the efficiency of Pfizer vaccines decreases to 16%
According to bankingnews.gr, the Israeli Ministry of Health published new data set on July 23, 2021 showing that the vaccine remains 91% effective initially against COVID-19 and only in two cases mild heart disease occurred in children aged 12 to 15 years.
However, according to the Israeli Ministry of Health, the effectiveness of Pfizer vaccines in slowing down infections was reduced from the initially 90% to 95%… to 39%.
The vaccine was found to be 39% to 40% effective against the symptoms caused by COVID 19 and 88% effective for those in need of treatment.
However, according to the Israeli Ministry of Health, based on data collected from people who were vaccinated six months ago or more, the effectiveness of the vaccine against COVID 19 and its transmission was reduced to 16%.
Of the more than 1.8 million people who were vaccinated with two doses by Jan. 31, about 5,770 were infected with COVID-19. and 1,181 of them, or 20% of all new infections, were infected last week, the health ministry said.
However, of those tested positive for COVID-19, only 495 were hospitalized, 334 developed a serious illness and 123 died.
The new variants are more common in people aged 60 and over.
This could be because they were the first people to be vaccinated or because older people are more likely to be immunosuppressed and prone to new infections.
The Ministry of Health found that among 178,836 adolescents aged 12-15 years who had been fully vaccinated and another 56,524 who had been vaccinated with a single dose since July 20, two of them developed heart disease.
One of the teens was hospitalized three days after the second dose with fever and chest pain but was discharged from the hospital.
The other developed a fever and diarrhea after his first dose, and five days later, he went to the hospital with chest pain. He remained in the hospital for five days.
In other developments, fewer [adverse reaction] have been reported in children aged 12 to 15 years who have been vaccinated.
The majority (9 childrens) generally had pain after the first or second dose of the vaccine, three had pain at the injection site and three had serious side effects and required follow-up.
Study in Britain: Vaccine-producing antibodies begin to decline by up to 50% 2-3 months after the second dose.
Antibody levels generated by two doses of Oxford / AstraZeneca or Pfizer / BioNTech vaccines to treat COVID-19 may begin to decrease six weeks after the second dose and for some people may drop by as much as 50% or less in three months, according to the research.
The University College London (UCL) study analyzed blood samples from 552 vaccinated people aged 50 to 60 years.
Antibody levels vary widely between patients, but a double dose of Pfizer / BioNTech produced more antibodies to Covid 19 than the Oxford vaccine.
For the Pfizer vaccine, antibody levels dropped by an average of 7,506 units per milliliter (ml) in the 21-41 days after vaccination to 3,320 units per ml in 70 days or more.
For the Oxford vaccine, they were reduced from 1,201 units per ml in 0-20 days to 190 units per ml in 70 or more days.
The findings are published in the journal Lancet.
Source: War News 24/7