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Report on Infectious Diseases of Animals.

BY A. CLARK HUNT, M.D., STATE MEDICAL INSPECTOR.

To the Board of Health of the State of New Jersey:

GENTLEMEN-During the year ending October 31st, 1906, seventy-six cases of anthrax were reported. On March 7th, 1906, Whitfield Gray, D.V.S., of Newton, reported that there were cases of a suspicious nature upon a farm located near that town. Specimens from the diseased animals were forwarded to the State laboratory of hygiene, and it was proven that the animals were suffering from anthrax. Seven of the animals died and one recovered. Dr. Gray administered protective vaccination to twenty-five animals. The investigation as to the cause of the epidemic led to the conclusion that in all probability the disease was introduced upon the premises by meat scrap which had been purchased as food for chickens. It was first noticed that the chickens that had been fed meat scrap were dying, and very shortly after the animals in the barn were affected with the disease. The disease did not extend beyond the farm upon which it first appeared, and no further cases have been reported in Sussex county.

On May 18th, 1906, S. C. Tremaine, D.V.S., of Bridgeton, reported the death of an animal in Cumberland county from anthrax. The total number of deaths from anthrax in Cumberland county from May 18th to August 28th, 1906, was fifty, and in addition to this five deaths of animals in which no diagnosis was made, but which were undoubtedly caused by anthrax, were reported.

On July 17th, 1906, W. B. Kille, D.V.S., reported two deaths from anthrax in the vicinity of Salem, and from the above date until July 31st, 1906, thirteen deaths of animals in Salem county were caused by this disease. For the prevention of the spread of anthrax in Cumberland county Dr. Tremaine vaccinated nine hundred animals, and in Salem county, under the supervision of T. B. Rogers, D.V.S., eleven hundred animals were vaccinated. The history of the outbreaks of anthrax occurring in Cumberland and Salem counties indicates that the owners of animals in this section should each year, prior to turning the animals out upon the meadows, have protective inocculations applied to each animal. If this is not done it may be expected that from year to year recurring outbreaks of the disease will appear.

The total number of cases of glanders which have been reported during the year is one hundred and forty-seven as compared with sixty-nine reported during the previous year. The most serious outbreak which occurred was in Middlesex county. During the month of July, 1906, twenty-four animals having glanders were destroyed in Perth Amboy and vicinity. The investigation of the outbreak showed that the disease had been introduced by animals which were purchased at sale stables. During the month of August, 1906, in South River, Middlesex county, fourteen animals having glanders were destroyed. These animals were used in the clay banks and brick factories, and in all probability the disease was introduced by animals purchased at sale stables.

During the year ending October 31st, 1906, six cases of rabies were reported, and four cases of tuberculosis in cattle reported to this board were referred to the State tuberculosis commission.

The following is a list of the cases of glanders which occurred in New Jersey during the year ending October 31st, 1906:

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The total number of cases of glanders reported was 147. Of this number thirtyeight cases occurred in Newark, twenty-four in Perth Amboy, fourteen in South River and ten in Jersey City.

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Report on State Laboratory of Hygiene.

BY R. B. FITZ-RANDOLPH, DIRECTOR.

To the Board of Health of the State of New Jersey:

GENTLEMEN-I have the honor to submit the following report of the operations of the State laboratory of hygiene during the year ending October 31st, 1906:

The examinations made in the laboratory fall in three classes: the examination for diagnosis of specimens sent by physicians from suspected cases of communicable diseases, both human and animal; chemical analyses of foods and drugs, the authority to perform such analyses being contained in chapter 86 of the laws of 1901, its amendments and supplements; and the chemical and bacteriological examination of specimens of water from public and private supplies.

The work done in the laboratory has been, in the main, a continuation of lines of work begun in previous years. The number of specimens examined in each department is greater than for any previous year, and it is believed that this increase will steadily continue. An examination of Table III. (page 147) will show that the num ber of specimens examined for diagnosis during the year is 8,033, an increase over the preceding thirteen months of 985, or approximately 14 per cent. The number of samples of food and drugs examined, including water, is 4,256, an increase of 608, or approximately 17 per cent.

The equipment of the laboratory is now sufficient to enable routine examinations of specimens from suspected cases of diphtheria, pulmonary tuberculosis, typhoid fever, malaria and gonorrhoea to be made with accuracy and speed. Tests for anthrax, rabies and glanders are made with difficulty, and the results obtained are more or less uncertain because the laboratory is so situated that it is impossible to keep on hand a supply of animals for experimental purposes. Owing to the difficulty of obtaining suitable animals at short notice, the results of examinations requiring the use of such animals cannot have the same degree of certainty, nor can reports be made with the same promptness as if suitable animals were always available. During the year an attempt has been made to begin the examination of selected samples of milk for pus, streptococci and dirt. These substances occur frequently in milk and indicate that milk which contains any or all of them is unfit for use as food The laboratory is possessed of the necessary equipment to make such examinations, but it has been found impossible to regularly examine the specimens received because of lack of time. During the coming year, if it is possible to somewhat increase the laboratory staff, such examinations will be made a part of the regular routine.

Owing to the passage of chapter 313 of the laws of 1906, which imposes a heavier penalty for watered milk than for milk which is only deficient in milk solids, it has been necessary to spend much additional time in analytical work on milk samples.

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