Volume 20, Number 5—May 2014
Carriage Rate and Effects of Vaccination after Outbreaks of Serogroup C Meningococcal Disease, Brazil, 2010
|Variable||All N. meningitidis strains
||Serogrouped N. meningitidis strains
|% Workers exposed||% Workers not exposed||p value*||% Workers exposed||% Workers not exposed||p value*|
|Antimicrobial drug use†||12.9||22.1||0.16||3.2||12.0||0.11|
|Crowded living conditions||17.4||22.9||0.14||9.9||12.3||0.35|
|Low level of education‡||32.9||19.2||0.01||17.0||10.6||0.07|
*By Fisher exact test.
†In the 15 d before the collection of the nasopharyngeal sample.
‡Defined as not completing secondary education.
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