If proven to be true, this is huge!
“This could be the greatest medical advance in 100 years,” said Pfizer chairman and CEO Dr. Albert Bourla of his company’s blockbuster announcement that its COVID-19 vaccine is showing a 90 per cent efficacy. The announcement has made headlines around the world and has sent stock markets soaring in optimism.
To be clear, what 90 per cent efficacy means is that out of the nearly 44,000 people of diverse backgrounds not previously exposed to the disease enrolled in Phase 3 of the study when Pfizer looked at the infected and non-infected patients, 90 per cent of those infected were shown to have received the placebo, while only 10 per cent of the infected had received the actual vaccine. Thus, 90 per cent efficacy.
This is great news because scientists have long indicated that a vaccine with a 50 per cent efficacy would go a long way to controlling the spread of the pandemic.
