Osterholm, Michael T; Kelley, Nicholas S; Sommer, Alfred; Belongia, Edward A (2012). “Efficacy and effectiveness of influenza vaccines: a systematic review and meta-analysis”. 《The Lancet Infectious Diseases》 12 (1): 36–44. doi:10.1016/s1473-3099(11)70295-x. PMID22032844.
Fine, P.; Eames, K.; Heymann, D. L. (2011년 4월 1일). “"Herd Immunity": A Rough Guide”. 《Clinical Infectious Diseases》 (영어) 52 (7): 911–916. doi:10.1093/cid/cir007. ISSN1058-4838. PMID21427399.
Osterholm, Michael T; Kelley, Nicholas S; Sommer, Alfred; Belongia, Edward A (2012). “Efficacy and effectiveness of influenza vaccines: a systematic review and meta-analysis”. 《The Lancet Infectious Diseases》 12 (1): 36–44. doi:10.1016/s1473-3099(11)70295-x. PMID22032844.
Fine, P.; Eames, K.; Heymann, D. L. (2011년 4월 1일). “"Herd Immunity": A Rough Guide”. 《Clinical Infectious Diseases》 (영어) 52 (7): 911–916. doi:10.1093/cid/cir007. ISSN1058-4838. PMID21427399.