- Vet's needle - in Belgium 5 new breeding farms were infected by the multiple-use antibiotic needle belonging to the vet who failed to suspect ASFV for 3m. This may be why the MAFF's chief scientist once said your most important role after qualifying is to recognise ASFV.

- Rio de Janeiro airport swill was fed to neighbouring farms whose the dead pigs were diagnosed by clinicians as having Swine fever and their spleens were then used to make a 'swine fever vaccine'. This greatly acclerated the spread of ASFV because ASFV resists the crystal violet inactivation process for SFV.

- A tin of 'pet pate', from a Spanish holiday, was fed by a Belgian farmer to his pigs instead of his dog and 60% of pigs died in one hut over 3months before the disease, which was treated as poisoning, was reported by his vet. The vet spread it instead. One year after the end of this Belgian outbreak some of the carcases, which had been stored deep-frozen and not disposed of for ecological reasons, were sold illegally in Holland where another outbreak occurred.

- Treating acute virus infections as poisoning is common.. For instance mass mortalities of UK frogs and Indian vultures were sampled long and hard by conservations for pollutants before virology was attempted by Andrew Cunningham, Inst Zool.