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Pfizer-BioNTech COVID-19 vaccine immune response in the elderly In the absence of therapeutic intervention, vaccines are the only available avenue to contain the COVID-19 (coronavirus disease 2019) pandemic. Currently, vaccines against the causal agent, the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), are being administered globally. It is essential to understand the vaccine response to know its efficacy under diverse plans and cohorts. The duration of protection imparted by the current vaccine is unknown in a real-world setting. This is important, particularly in underrepres...

February 03, 2021 × This comes as the researchers are still trying to find out whether the mutated strains of coronavirus can evade immune cells incited by the vaccine, making vaccines less efficacious United Kingdom researchers have warned on Tuesday that the Covid-19 variant, currently in circulation across the country, has shown signs of further mutation. Researchers conducted tests on samples of the Kent variant, named after the region in England, where it was first detected, showed signs of evolution called ‘E484K’. However, this mutation has already been identified in South Africa ...