To this kid's parents: you are assholes!
Not only you threaten your son's health, but you threaten other people's health as well by letting your son be a relay for the bacteria.
People against common core vaccination program (I do not talk about new vaccines or vaccines for rare pathologies or vaccines with non-negigeable side effects) are criminals. And their primary victims are their own kids...
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http://elpais.com/elpais/2015/06/02/inenglish/1433262397_622650.html