Translations:Advanced Field Epi:Manual 1 - Disease Investigation/195/en
Wildlife vaccines for rabies were dropped from planes and contained tetracycline markers so foxes eating the baits would be able to be identified as vaccinated based on the staining of their teeth. Over time foxes that were killed or found dead were assigned to a 2x2 table based on whether they were rabies positive or negative, and vaccinated or unvaccinated.