A new study conducted by the UK Health Security Agency (UKHSA) has provided essential insights into the effectiveness of COVID-19 vaccines.
The study, which analyzed more than 10 million cases of COVID-19 in adults between May 2020 and February 2022, has shown that getting vaccinated can significantly reduce the risk of death from COVID-19.
However, this protection appears to decrease after six months, suggesting the need for booster doses.
The researchers wanted to understand how COVID-19 vaccination impacted the chances of someone dying from the virus.
To do this, they looked at a measure called the Case Fatality Risk (CFR), which is the percentage of people who died after getting infected with COVID-19. They compared this CFR with whether people had received the vaccine or not.
The study found a clear link between vaccination and lower mortality rates. This means that people who were vaccinated were less likely to die if they contracted COVID-19.
Interestingly, there was a particular period, roughly six months after the last vaccine dose, when the protection from the vaccine was at its strongest. After this time, the protection started to decrease, and the risk of death increased.
In simple terms, this research shows that the COVID-19 vaccines have successfully saved lives.
For instance, among adults over the age of 50, the risk of death from COVID-19 was ten times higher for those who hadn’t been vaccinated (6.3%) compared to those who had been vaccinated within six months before testing positive (0.6%).
Additionally, there was a sharp drop in the risk of death in early 2021, coinciding with the vaccine rollout.
One of the researchers involved in the study, Florence Halford from the UKHSA’s COVID-19 Vaccines and Epidemiology Division, explained, “Getting the COVID-19 vaccine reduced the risk of dying from the virus, especially when people were vaccinated up to six months before getting infected.
This suggests that giving booster doses to older people might be a good idea.”
In summary, this study tells us that COVID-19 vaccines effectively reduce the chances of dying from the virus.
However, this protection seems to decline after about six months, so it might be necessary to give people booster shots to keep them safe, especially among older age groups.
The findings of this research help us better understand the importance of vaccination in the fight against COVID-19 and the potential need for ongoing vaccination efforts.
If you care about COVID, please read studies about Moderna’s new COVID-19 vaccine is more efficient and long-lasting and findings of Scientists find a new cause of long COVID.
For more health information, please see recent studies about COVID infection and vaccination linked to heart disease, and results showing extracts from two wild plants can inhibit COVID-19 virus.
The research findings can be found in Journal of the Royal Society of Medicine.
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