Low Childhood Vaccination Rates in Nevada Raise Concerns About Herd Immunity - the Nevada Independent

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Vaccination rates among Nevada children at key ages declined again in the 2024-25 school year, according to new state data. The data show that the state's kindergarten students are even further from the threshold for herd immunity against measles. The threshold for reaching herd immunity—when enough of the population is vaccinated to limit the spread of infection—varies by disease, but the threshold for protection against measles is 95 percent. …