Answer 30
The following infections are zoonoses
True a. salmonellosis
Falseb. leprosy
True c. tularaemia
True d. Weil's disease (leptospirosis)
False e. cholera
A zoonosis is a disease that is naturally transmissible between vertebrate animals and man.
Salmonellosis is one of the most common zoonotic infections in developed countries. The bacteria contaminate food, notably poultry and eggs.
Leprosy: the only other vertebrate reservoir of Mycobacterium leprae is the nine-banded armadillo.
Tularaemia is caused by Francisella tularensis. Important animal hosts include rabbits, squirrels, other rodents and birds. Very close animal contact is required for transmission. Clinical features may include: a pustule or ulcer, suppurative lymphadenopathy, fever and pneumonia. Treatment is with srteptomycin or gentamicin.
Weil's disease follows contact between damaged skin or mucous membrane and infected animal urine.
No vertebrate reservoir has been identified for Vibrio cholera.
Table 30
| Some important zoonoses |
| Viral |
orf
cowpox
rabies |
| Bacterial |
salmonella
campylobacter
brucella
tuleraemia
Weil's disease
anthrax |
| Protozoal |
African sleeping sickness
leishmaniasis
giardiasis
toxocariasis
cryptosporidiosis |
