Assertion: rheumatic fever | /r/HasProperty | serotype
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Source sentences:
text: To test this, Shulman et al. examined the M type of bacteria collected between 1961-8 in Chicago, and from Chicago and a number of other sites across the country between 2000-4. 2 types that are known to cause rheumatic fever (serotypes 1 and 12) had essentially identical percentages over the years and in various geographic regions.