News analysis: The largest public vaccination effort ever was quickly tarnished. Even people leading the effort are at a loss to explain how and why.
Author: Karen Weintraub and Elizabeth Weise, USA TODAY
New strains of COVID swiftly moving through the US need careful watch, scientists say
Each COVID-19 infection increases the risk of a mutation that could make it more infectious, deadlier, or different enough to make vaccines not work.
The sprint to create a COVID-19 vaccine started in January. The finish line awaits.
Drug developers confronting the coronavirus pandemic are fueled by coffee, competitiveness and a chance to protect the world.
AstraZeneca’s COVID-19 vaccine trial has been stopped after an illness. Here’s what it means.
The hold AstraZeneca placed Tuesday on its COVID-19 vaccine trials is the first major setback in pursuit of a vaccine. Such setbacks aren’t uncommon.