Officers are detailed to receive instruction in this laboratory, thus enhancing the scientific attainments of the corps and giving opportunity for selection of those best qualified for permanent detail in research work. In this manner specialists have been and are being developed on various subjects, such as typhoid fever, pellagra, hookworm disease, infantile paralysis, scientific disinfection, etc.
Public Health Service officers may be found in the States investigating other diseases than those named in the epidemic law, viz., typhoid fever, infantile paralysis, cerebro-spinal meningitis, hookworm disease, malaria, pellagra, dengue fever, milk sickness, etc. These investigations are usually made at the request of State health authorities. The bureau at Washington, on receiving a request from a city or locality for expert aid, invariably refers the request to the State Board of Health before compliance.
The laws permitting these investigations are, first, the interstate section of the quarantine law of 1893; and second, the act of Congress approved March 3, 1901, providing a building for the hygienic laboratory for investigations of contagious and infectious diseases and matters relating to the public health. As the investigations require laboratory examinations, they come within this last named law and the appropriation which supports it.
In various States of the Union, there are thirteen establishments engaged in the production of vaccines, antitoxins and serums, which play so important a part in modern therapy. The variation in the potency and the occasional impurity of these products caused Congress to pass an act July 1, 1902, requiring a license for their manufacture for sale in interstate traffic.
ENFORCEMENT OF SANITATION IN FEDERAL TERRITORY.
In the Philippine Islands, where the government is by commission and a legislature, much work of value to the public health is performed in the bureau of science under the insular government. There are, however, in the several ports of the Philippines medical officers of the Public Health Service under appointment from the Treasury Department in Washington, engaged in the transactions of both incoming and outgoing quarantine. Two of these officers, in addition to their supervision of the national quarantine, are also director and assistant director, respectively, of the public health of all the Philippines.
In Hawaii you will also find medical officers conducting the national quarantine. They are also assisting the territorial health board in preventing the recurrence of plague by the extermination of rats and continuous bacteriological examination of those captured. One of these officers is the official sanitary adviser of the Governor of Hawaii, and is carrying on a campaign for the eradication of disease-bearing mosquitoes.
Here also may be observed the leprosy investigation station, also controlled by our officers, both on the island of Molokai, where hospital and other accommodations have been erected under the law of March 3, 1905, appropriating $100,000 for this purpose, and at the receiving station at Honolulu, where cases are seen in the earlier stages.
In Porto Rico public health officers are enforcing the United States quarantine regulations under the acts of Congress relating to Porto Rico and national quarantine. The campaign which has practically eradicated plague from San Juan is being conducted by the Federal Public Health Bureau.
In the Canal Zone you will find two commissioned officers enforcing quarantine regulations at Ancon on the Pacific and Colon on the Atlantic. These officers are loaned to the Isthmian Canal Commission. This is an important adjunct to the work of the canal, because it would be useless to clean the zone if fresh importations of disease were permitted.