19 June 2020 Vol 368, Issue 6497
Pandemic vaccines are about to face the real test
By Jon Cohen
Science19 Jun 2020 : 1295-1296 Full Access
U.S. and global efforts are taking different approaches to key efficacy trials of candidates.
A Chinese company will turn to Brazil for help. The World Health Organization is adopting a strategy forged in a war zone during an Ebola outbreak. And the Trump administration plans to lean on existing infrastructure for testing HIV and flu vaccines. These are the disparate strategies about to be employed in the next and most important stage of the COVID-19 vaccine race: the large-scale, placebo-controlled, human trials needed to prove which of the more than 135 candidates are safe and effective.