What does Pfizer's vaccine mean for Asia? Five things to know

Questions remain over new technology, long-term immunity and limited supply

Pfizer says its trial involves more than 40,000 people in the U.S. and elsewhere, which suggests that the vaccine candidate may be broadly effective. © AP

MITSURU OBE, Nikkei staff writer

November 11, 2020 13:06 JST

TOKYO -- U.S. drugmaker Pfizer lifted spirits worldwide this week with word that its vaccine candidate was found to be "more than 90% effective in preventing COVID-19."

Scientists think it could lead to a victory against the coronavirus, but warn against premature optimism and want more information before drawing conclusions. Here are five things to know.