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Although the vaccine significantly reduces the risk of contracting COVID-19, some people may still get infected even after receiving two doses. There are several factors that go into the fact that we are still at risk of being infected even after vaccination.
- The COVID-19 vaccines on the market do not provide 100% protection against infection.
- Scientists are conducting research that allows to estimate the effectiveness of vaccines, but they are still in the early stages
- Whether we get COVID-19 after full vaccination may be determined by the preparation taken, the time since vaccination, the variant of the coronavirus we are dealing with, as well as individual predispositions
- More information can be found on the TvoiLokony home page
Two weeks after taking the second dose against COVID-19protection against infection is greatest. However, none of the vaccines currently available protect against the coronavirus 100%. The onset of the disease after just two doses indicates a “breakthrough” infection.
“Breakthrough” infection, or why vaccinated people get COVID-19
In unvaccinated people, the most common symptoms of COVID-19 are headache, sore throat, runny nose, fever, and a persistent cough. According to the COVID Symptom Study, the five most common symptoms of a breakthrough infection, or in fully vaccinated patients, are headache, runny nose, sore throat and loss of smell.
Fever and cough are much less common after vaccination. One study found that people with “breakthrough” infections are 58 percent. they are less prone to fever compared to unvaccinated people, and they compare the course of COVID-19 to the common cold.
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The cause of a milder disease in people who are vaccinated may be because vaccines, even if they do not block the infection, reduce the amount of virus in the body.
Research in Great Britain showed that 0,2 percent. of the population (one in 500) experiences a “breakthrough infection” when fully vaccinated. The degree of protection against infection depends on four factors.
Read also: How many infections after the third dose? New data from Israel
Type of vaccine
The likelihood of getting COVID-19 after receiving the vaccine depends on which preparation we were vaccinated with. Clinical trials have shown that the Moderna vaccine reduces the risk of symptomatic COVID-19 by 94%, while the vaccinePfizer it reduces the risk by 95%. Vaccinations Johnson & Johnson i AstraZeneca reduce the risk of falling ill by approx. 66%, respectively. and 70 percent
Time since vaccination
The time since vaccination also matters, therefore Booster doses are increasingly recommended. Research shows that protection of the Pfizer vaccine wears off within six months of vaccination. Scientists are not yet able to judge the effectiveness of the vaccine (expressed as a percentage) six months after the second dose, but this is likely to decline as well.
Read also: The vaccinated Piotr Gąsowski has COVID-19. Does that mean the vaccines are not working? [WE EXPLAIN]
According to research published in the journal Science, the effectiveness of the preparations begins to decrease significantly even after three months after full inoculation with Pfizer, Moderna or Johnson & Johnson.
The effectiveness of Johnson & Johnson dropped from 86 percent to just 13 percent in six months. This means that six months after vaccination, it practically no longer protects against coronavirus infection. Despite this all preparations, even after six months, effectively protect against death as a result of COVID-19 infection.
Read also: The most common symptoms of COVID-19 among vaccinated people. They may not know they are sick
Virus variants
Another important factor is the virus variant. Most of the research conducted concerns the primary form of the coronavirus, not its mutation.
The Pfizer vaccine is to be 93 percent. effective against the Alpha variant and in 88 percent. in collision with the Delta variant. The same is true for AstraZeneca.
Within two to four weeks after receiving the second dose of Pfizer, the likelihood of developing Delta variant symptoms is approximately 87 percent. smaller. After four to five months, it drops to 77%.
The immune system
Research always reflects the population’s assessment, and it should be remembered that each organism is different. The response to the vaccine and its effectiveness depends on the individual immune system and many other factors.
Immune performance tends to decline with age, and chronic diseases also weaken immunity. In addition, those most at risk of developing COVID-19 received the vaccine in the first place, more than eight months ago, which means that its effectiveness may already be waning.
Do you want to test your COVID-19 immunity after vaccination? Have you been infected and want to check your antibody levels? See the COVID-19 immunity test package, which you will perform at Diagnostics network points.
See also:
- The effectiveness of vaccines declines over time. In one of them, the decline is drastic
- “Coronavirus takes entire families”. In the hospital in Busko-Zdrój, the mother and daughter died, the father is fighting for his life
- Europe introduces restrictions. Where is the sharpest? [WE CHECK]
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