A 50 percent reduction for ER visits and hospitalizations is hugely significant. Vaccines are amazing.
Felicia Krieg
Exclusive: The acting director of the CDC has delayed publication of a report showing the covid-19 vaccine cut the likelihood of ER visits and hospitalizations for healthy adults last winter by about half, according to two scientists.
The acting CDC director cited concerns with the methodology, but the design has long been used to test vaccine effectiveness.
