The Centers for Disease Control and Prevention, the U.S. agency leading the fight against Covid-19, gave up a crucial surveillance tool tracking the effectiveness of vaccines just as a troublesome new variant of the virus was emerging.
While the CDC stopped comprehensively tracking what are known as vaccine breakthrough cases in May, the consequences of that choice are only now beginning to show.
At the time, the agency had identified only [Read more...] about CDC STOPS TRACKING BREAKTHROUGH CASES