International Journal of Epidemiology 2001;30:1034
© International Epidemiological Association 2001
Infectious Disease |
Commentary: Cuba libre de poliovirus
Aventis Pasteur, 4650 Wismer Road, Doylestown, PA 18901, USA.
In this issue of the International Journal of Epidemiology, Mas Lago et al.1 report the disappearance of oral polio vaccine (OPV) strains from Cuba following a national vaccination campaign, and infer from their results that OPV could be
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