Вспышки Hib-инфекции: D. Sapatkin, A Fatal Link in Vaccine Shortage, Philadelphia Inquirer, April 1, 2009.
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Hib-инфекция: Centers for Disease Control and Prevention, Invasive Haemophilus Influenzae Type B Disease in Five Young Children – Minnesota, 2008, Morbidity and Mortality Weekly Report 58 (2008): 1–3.