KEY POINTS
  • Pfizer says its coronavirus vaccine — developed in partnership with BioNTech — was more than 90% effective in preventing Covid-19 infection.
  • The news was hailed as a significant milestone in the race to deliver a vaccine that can help bring an end to the coronavirus pandemic.
  • There are still huge challenges ahead for the development of a vaccine, but as hopes rise worldwide, CNBC takes a look at BioNTech's history.
The logo of the biotechnology company "BioNTech" in front of the company headquarters.

LONDON — Before 2020, Germany's BioNTech was a relatively little-known biotechnology company. That all changed when Covid-19 arrived.

On Monday, U.S. drug maker Pfizer announced an early analysis of its coronavirus vaccine — developed in partnership with BioNTech — was more than 90% effective in preventing Covid-19 among those without evidence of prior infection.