Moderna is seen as a frontrunner in creating a COVID-19 vaccine, but it faces 17 serious competitors with candidates in clinical evaluations and 129 others in earlier development stages, according to the World Health Organization.
Moderna is viewed as a frontrunner in creating a COVID-19 vaccine, but it faces 17 serious competitors with candidates in clinical evaluations and 129 others in earlier development stages, according to the World Health Organisation.