PEARSON, R J The 1961 Middletown Oral Poliovirus Vaccine Program. VII. Reactions to the oral vaccine. [electronic resource] - The Yale journal of biology and medicine Apr 1962 - 498-504 p. digital Publication Type: Journal Article ISSN: 0044-0086 Subjects--Topical Terms: HumansPoliomyelitis--immunologyPoliovirus Vaccine, OralVaccines