The U.K. is preparing to launch a large-scale vaccination effort by stocking up on doses of promising COVID-19 vaccines.
The British government agreed to buy more than 350 million doses of vaccines from seven producers if they are proven effective.
Two vaccines are being reviewed by the a U.K.'s Medicines and Health Care Products Regulatory Agency.
The U.K. has confirmed more than 58,000 coronavirus-related deaths, the most in Europe.
