World Health Organization (WHO) · Journal articles

Infected areas as at 10 April 1997 : For criteria used in compiling this list, see No. 24, 1996, p. 188. X — Newly reported areas = Zones infectées au 10 avril 1997 : Les critères appliqués pour la compilation de cette liste sont publiés dans le N° 24, 1996, p. 188. X — Nouvelles zones signalées

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Source World Health Organization