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Plague in Rabbits.-These animals are much more resistant than either the rat or the Guniea pig. The type of disease produced is septicemia. This would not appear to depend upon the mode of incorporation of the virus.
Plague in Pigs,
Calves,
Sheep,...
Monkeys,
Hens.
Pigeons,
Turkeys,.
Geese,
Ducks,
J
SIMPSON and HUNTER'S experiments.
Vide SIMPSON's Report on Plague in Hongkong.
So far as Monkeys are concerned, the Semnopithecus entellus would appear to be much more susceptible to plague infection to the Macacus rœsus, (Russian Plague Commission.)
Squirrels are also susceptible to plague. (German Plague Commission.)
Dogs are relatively susceptible to plague. ALBRECHT and GHON found that these animals discharged numerous plague bacilli in their faces, after eating grossly infected plague material.
Goats may also contract plague. Snakes, Lizards and Frogs may suffer from plague but only under certain conditions.
Their body temperature would appear to affect, unfavourably, the growth of the B. pestis. NUTTALL (Cent. f. Bakt. Bl. 22, 1897) found that vipers and lizards were insusceptible to plague at a temperature of 16° to 18° C. On raising the temperature to 26° or 28° C. these animals readily contrated the disease
General Conclusions in regard to the Occurrence of Epizootic Plague.-
1. Plague infected human beings may infect animals, and vice versa. 2. Plague infected animals may infect other healthy animals.
3. Domestic animals suffering from plague may infect man.
4. Epizootic plague occurs in acute and chronic forms.
5. Latent plague may also occur.
6. Rats and Guinea pigs would appear to be most susceptible to plague.
7. The mouse comes next in order of susceptibility.
8. Monkeys, especially the grey monkey, are extremely susceptible to
plague.
9. Cats may contract the disease naturally.
10. Birds may also suffer from the disease in nature.
11. Practically every vertebrate animal found in the immediate neigh-
bourhood of man, may be rendered plague infected.
12. The induction of the disease by feeding gives the most constant
results.
13. The type of disease reproduced in animals is a true septicemia.
14. Animals suffering from plague scatter plague bacilli broadcast in
their secretions and excretions.
Spontaneons Epizootic Plague.-Direct obervation of this has been noted for the following animals :---
1. The Rat
2. The Mouse.
3. The Cat.
4. The Guinea Pig.
5. The Monkey.
6. The Hen.
7. The Pigeon.
8. The Turkey.
9. The Goose.
10. The Duck.
11. The Marmot (Arctomys bobac).
WILLIAM HUNTER.