2) National Center for Immunization and Respiratory Diseases: General recommendations on immunization. Recommendations of the advisory committee on immunization practices (ACIP), 2011. MMWR Recomm Rep 2011; 60: 1–64.
4) Chen SY, Anderson S, Kutty PK, Lugo F, McDonald M, Rota PA, et al.: Health care-associated measles outbreak in the united states after an importation: Challenges and economic Impact. J Infect Dis 2011; 203: 1517–25.