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Important zoonotic diseases  481



                disease     Agent         Animals    Mode of      Clinical signs in   Action/ prevention
                                          involved   transmission   humans       & notes
                                                     to humans
                Pork        Taenia solium  Pig/human    Consumption of  Tapeworm   As above. Always
                tapeworm*                 life cycle.  cysts in infected  segments in   cook pork well.
                                                     meat.        faeces, there   The human is the
                                                                  may be cysts in   definitive host so
                                                                  tissues including   control should focus
                                                                  the brain (i.e.   on human hygiene
                                                                  humans can also   and behaviour.
                                                                  act as an accidental
                                                                  secondary host).
                NEMATODES
                Trichinosis*  Trichinella spiralis  Pigs and wild  Ingestion of   Myositis,   Do not feed
                                          boar, horses,   infected meat   fever, general   uncooked wastes
                                          bears, other   (pork, game   anaphylactic   to pigs, official meat
                                          carnivores,   including   reaction, death.  inspection, cook meat
                                          rodents.   some marine                 well (note that drying
                                                     mammals).                   and smoking does not
                                                                                 kill Trichinella).
                Cutaneous LM* Canine hookworm,  Dogs.  Percutaneous   Skin lesions,   Hygiene, do not let
                            Ancylostoma sp.          infection of   itching especially   children play where
                                                     hookworm     of feet.       dogs defecate/wear
                                                     larvae.                     shoes on beaches,
                                                                                 ensure routine
                                                                                 worming of puppies
                                                                                 and adult dogs.
                Visceral LM*  Toxocara canis  Dogs   Ingestion of   Myositis,    Hygiene, do not let
                                          especially   infective stage   non-specific,   children play where
                                          puppies.   in dog faeces.  neurological signs,  dogs defecate,
                                                                  blindness (rare).  ensure routine
                                                                                 worming of puppies
                                                                                 and adult dogs.
                ARTHROPODS
                Fleas, Mites,   Various arthropod  Many animal   General   Skin lesions,   General hygiene,
                Ticks, Lice  species      hosts, some   nuisance   secondary     various powders and
                                          human      but many     infections, itching/  sprays to control
                                          adapted    also transmit   self trauma.  arthropods on
                                          species (e.g   diseases.               humans, animals and
                                          Sarcoptic                              the environment are
                                          mange).                                available. See Chapter
                                                                                 3 (entomology) for
                                                                                 specific arthropods
                                                                                 and Tables 14.1 and
                                                                                 14.2 for a list of some
                                                                                 important vector
                                                                                 borne diseases.












       Vet Lab.indb   481                                                                  26/03/2019   10:26
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