Aphthae Epizooticae among the wisents (Bison bonasus L.) and the cross-bred wisents (Bison bonasus L. X Bison bison L.) of the Royal Zoological Society “Natura Artis Magistra” at Amsterdam in the autumn of 1937

When in the summer of 1937 foot-and-mouth disease began to prevail among the cattle of Holland and spread rapidly in spite of extensive measures taken by the Dutch Veterinary Government Inspection, it was to be expected that also those animals in the Zoological Gardens, susceptible to this disease, would be affected. Experience gained during earlier extensive foot-and-mouth-disease epizooticae has proved that this disease, singularly contagious for ruminants, could not be prevented notwithstanding the secluded spot occupied by these animals in the Zoological Gardens.