Why is a 95% vaccination rate so important? – CBS News Watch CBS News Penn State University professor of biology and infectious diseases Dr. Matt Ferrari...
What is herd immunity and why does it matter? – CBS News Watch CBS News Penn State University professor of biology and infectious diseases Dr. Matt...
Measles was officially declared eradicated in the U.S. more than 20 years ago, but new outbreaks of the disease are popping up — and experts say declining...
Rates of routine childhood vaccination hit a 10-year low in 2023. That, according to the Centers for Disease Control and Prevention, puts about 250,000 kindergartners at...
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