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medium lime impact crusher in Incheon Republic of Korea East Asia

Dec 20, 2012· The first outbreak occurred in a preschoolin Incheonand involved 15 confirmed cases from 152 exposed students. Among those 15 patients, 14 had received fewer than 2 doses of MMR vaccine, and measles affected 100% of children with no vaccination history19).Following the outbreak, the importance of maintaining high 2-dose MMR vaccination coverage and keeping accurate …

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