When the drug company Pfizer announced Monday that early data showed its coronavirus vaccine is more than 90% effective in protecting people from the disease, the hearts of millions of people around the world leapt — and stock markets soon followed.
When the drug company Pfizer announced Monday that early data showed its coronavirus vaccine is more than 90% effective in protecting people from the disease, the hearts of millions of people around the world leapt — and stock markets soon followed.
