The number of Minnesota schools with low kindergarten vaccination rates for measles and chickenpox has grown sharply in the last five years, prompting concern among state health officials that they are vulnerable to outbreaks of the highly contagious diseases.

One-third of Minnesota schools had kindergarten vaccination rates below the level required for “herd immunity,” according to a Star Tribune analysis of 1,110 elementary schools.

 

iStock, RyanJLane

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