Growing resistance to vaccines makes populace more vulnerable

Protection of 'herd immunity' eroded by trend

The Wall Street Journal  |  Updated 10:30 AM, 02.06.2015

Posted in: Issues

  • Last year, in seven states and Washington, D.C., fewer than 90% of kindergartners were vaccinated for measles, according to the U.S. Centers for Disease Control and Prevention. ThinkStock
When too many healthy people opt out of immunizations, the whole population -- not just those who skipped shots -- becomes more vulnerable to disease. People who were previously protected may face disease strains for which they have no defense.

“We’ve reached a situation in parts of the country where we are well below high levels of vaccination [for measles],” said "Betz" Halloran, a professor of biostatistics at the University of Washington. 

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Tagged with: immunization, public health
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