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Five things to know about Pfizer's COVID-19 vaccine that's 90% effective, including India availability

The potential COVID-19 vaccine was found to be more than 90 percent effective in preventing the disease in participants who had no prior history of SARS-CoV-2 infection.

November 10, 2020 / 04:40 PM IST

US drug major Pfizer and German biotech firm BioNTech have pleasantly surprised the world on November 9 by announcing that their potential COVID-19 vaccine was found to be more than 90 percent effective in tackling the novel coronavirus.

The companies said the first interim efficacy analysis suggested that their COVID-19 vaccine candidate was found to be more than 90 percent effective in preventing COVID-19 infection in participants who had no prior history of SARS-CoV-2 infection.

The announcement of early positive results from a late-stage clinical trial puts Pfizer-BioNTech ahead of other vaccine makers.

Pfizer and BioNTech's COVID vaccine candidate is based on genetic material or mRNA that instructs human cells to make SARS-CoV2 antigen, eliciting an immune response.