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COVID vaccine prevention is likely to decline over time-UK adviser says

COVID vaccine prevention is likely to decline over time-UK adviser says

 


London, July 30 (Reuters)-Vaccine campaigns will continue for years to come, as vaccine protection against coronavirus infections and potentially serious illnesses is likely to weaken over time, scientists say. He told an advisory group of the British government.

According to an executive summary of a document reviewed by the Government’s Scientific Advisory Group, “immunity to vaccine-induced SARS-CoV-2 infections, and potentially serious illnesses (perhaps to a lesser extent), can decline over time. For “high-quality” emergencies (SAGE).

“Therefore, vaccination campaigns against SARS-CoV-2 may take place over the years, but we now know the optimal frequency for re-vaccination to protect the vulnerable from COVID disease. No, “said the scientists.

The document entitled “How long will the vaccine continue to be protected from COVID?” Was written by prominent virologists and epidemiologists at Imperial College London, the University of Birmingham, and the UK Public Health Services.

The UK has approved and used three shots of Oxford-AstraZeneca, Pfizer-BioNTech and Moderna in a high-dose vaccination program launched in December 2020.

Real-world data show that these vaccines protect against alpha variants that prevailed in the UK in early 2021 with greater than 95% efficacy, but protect against infection and subsequent infections. Scientists said the shot’s ability was low.

They said that while the effectiveness of the vaccine may be expected to remain high for severe illnesses, its effectiveness for mild illnesses and infections may decline over time.

Case reports from the United Kingdom and Israel, which undertook a comprehensive initial campaign, supported the concept, they said.

Israel will begin offering a third dose of the Pfizer / BioNTech COVID-19 vaccine to people over the age of 60. This is the world’s first effort to slow the spread of highly contagious delta mutants. read more

Since the advent of the Delta mutant, the Israeli Ministry of Health has reported twice a decrease in vaccine efficacy against infection and a slight decrease in vaccine protection against serious illness.

Report by Guy Faulconbridge and Paul Sandle

Our criteria: Thomson Reuters Trust Principles.

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Sources

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2/ https://www.reuters.com/world/uk/covid-vaccine-protection-highly-likely-wane-over-time-uk-advisers-say-2021-07-30/

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