The rat and its relation to the public health

The science of bacteriology has elucidated many facts with respect to the causation of disease, and with this advance in knowledge, old theories regarding the miasmatic and humo...

Dr. Ch. Wardell Stiles discusses the internal parasites of rats and mice in relation to the diseases of man. He regards the rat as a permanent reservoir for trichinosis, and sta...

Both albinism and melanism are frequent among rats, and pied forms also are common. It has been claimed that all the white rats (albinos) of the bird stores are _Mus rattus_, bu...

The layman of average intelligence readily learns to recognize the gross lesions of rat plague and it is wise to train the laboratory attendants to do this. Every rat should, ho...

The value of inoculation by the cutaneous method to demonstrate the presence of plague infection in putrefying tissue is well known. We have had one example in which the value o...

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The ease with which wild rats are obtained and the readiness with which they adapt themselves to the conditions of life in captivity are factors which should make them more exte...

These wingless, compressed insects are known to all, but few have taken the trouble to look at them with much care. The adult female flea deposits her eggs among the hairs or fu...

The sucking habits of the lice render them dangerous parasites and capable of transmitting a disease from one host to another. Fortunately they do not readily change hosts so th...

Flagellate protozoa belonging to this genus are reported as parasitic in the intestinal canal of various species of mammals. At present the forms in question are usually looked...

Rats, on the contrary, are cannibalistic, and trichinosis is a common disease among them. Hence they may be viewed as the natural reservoir for the parasites and for the disease...

_bacillatum_ Eberth: Trichosoma.—Esophagus. _hepaticum_ Railliet, 1889: Trichosoma.—Liver. _minimum_ Molin: Gongylonema.—On stomach, liver. _muris_ Gmelin: Filaria. _muris_ Wern...

Some explanation is necessary as to why the bacilli eventually disappear from the flea, although they seem to multiply during the first few days. It is evident that the peristal...

A. WITHOUT A COMB OF SPINES ON THE PROTHORAX OR THE HEAD. 1. Two bristles on the gena, an ocular bristle placed below the eye, an oral bristle placed just above root of maxilla....

_Abdomen._—The first abdominal tergite contains 2 rows of about 4 bristles each, while the other tergites to the seventh contain a single row of from 12 to 16 bristles. The stig...

A lad (F. M.) sickened August 5, 1908, in Los Angeles, Cal., after being bitten by a sick ground squirrel. A polyadenitis, which afterwards proved to be plague, developed in a f...

This is important not alone for its effect in a campaign upon rodents, but equally because it necessitates sanitary care and cleanliness in handling foodstuffs intended for huma...

To appreciate the great importance and absolute necessity of rat proofing as an antiplague measure, it is only necessary to consider the results that have followed its use as co...

In 1889 Loeffler discovered and described a bacillus which he called the bacillus of mouse typhoid (_B. typhi murium_). He isolated this organism from a spontaneous epidemic whi...

Some three years ago the Biological Survey, assisted by the Bureau of Animal Industry, tested the efficiency of Danysz virus. In the laboratory from 10 to 50 per cent of rats fe...

_Agglutination tests with serum of recovered cases, May 17, 1908._ ──────┬─────────────────────────┬────────┬───────────────────────────── Case. │ How infected; symptoms. │Strai...

Danysz,[BS] 1900, isolated a cocco-bacillus during an outbreak of spontaneous disease amongst field mice which presented the general characteristics of the colon bacillus and to...

So important is this and so preeminent is the rôle played by the rat in plague transmission and propagation that I believe regulations should demand that all ships be disinfecte...

Among tropical fruits injured by rats are oranges, bananas, figs, dates, cocoanuts, and especially the pods of cacao (_Theobroma cacao_), from which chocolate is manufactured. H...

While the classification of ships and the limitations placed on quarantine procedures in relation thereto, as contained in existing international sanitary agreements, is more ap...

In a report dated January 20, 1909, Dr. A. J. Gregory, medical officer of health for the colony, states that at present no persons are solely employed on rat catching, but the s...

If it becomes known to the board of health that in any locality or group of buildings there are rats in large quantities, rat poison is immediately laid. For such purpose the ab...

(_b_) Submit the holds and other such parts of the vessel as the quarantine officer directs to sulphur fumigation in accordance with this regulation, or to some other method of...