006590000a22001690004500003000900000005001700009110007400026245010500100562003500205264004900240300000900289041000800298650003300306650001800339650004600357700008600403PH-MaWHO20241108112258.0 aAd Hoc Committee on Orthopoxvirus Infections Meeting (1994 : Geneva). aReport of the meeting of the Ad Hoc Committee on Orthopoxvirus Infections, Geneva, 9 September 1994. aWHO/CDS/BVI/94.3.--Unpublished aGeneva : bWorld Health Organization,c1994. a11p. aeng aCommunicable disease control aOrthopoxvirus aVariola virusxIsolation and purification aWorld Health Organization. Programme on Bacterial, Viral Diseases and Immunology.