A couple of studies from Czechoslovakia.
Markvart K, et al. [Explosive occurrence of measles in a vaccinated population]. Cesk Epidemiol Mikrobiol Imunol. 1977 Jan;26(1):15-24. [Article in Czech]. No abstract available.
PlesnÃk V. [Incidence of measles in children vaccinated with measles vaccine with diverse doses in a package]. Cesk Epidemiol Mikrobiol Imunol. 1972 Sep;21(5):242-7. [Article in Czech]. No abstract available.
