| http://www.w3.org/ns/prov#value | - In the U.S., all states except Mississippi and West Virginia allow parents to opt out of their children's otherwise-mandatory vaccinations for religious reasons.[30] The number of religious exemptions rose greatly in the late 1990s and early 2000s; for example, in Massachusetts, the rate of those seeking exemptions rose from 0.24% in 1996 to 0.60% in 2006.
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