| http://www.w3.org/ns/prov#value | - That has raised the prospect that vaccine-preventable illnesses such as measles and whooping cough may reappear in clusters.There is no credible evidence that vaccines are associated with learning disabilities, including autism, Kennedy said.Vaccination rates for U.S. children are still well ahead of those of many countries, but Kennedy said more could be done to address parents' concerns.She sa
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