Experts' views on Pfizer, BioNTech Covid-19 vaccine

COVID-19 | US pharmaceutical giant Pfizer said on Monday its experimental vaccine was more than 90 percent effective in preventing Covid-19 based on initial data from a large study, a major victory in the fight against the pandemic.

Pfizer and German partner BioNTech are the first drugmakers to show successful data from a large-scale clinical trial of a coronavirus vaccine.

The following are reactions to the news...