YELLOW FEVER INSTITUTE, 



Treasury Department, Public Health and Marine-Hospital Service, 

 WALTER WTMAN, Surgeon-General. 



Bulletin No. 9. 

 C— TRANSMISSION. J. H. WHITE, Asst, Surg. General, Chairman of Section. 



AEE VESSELS INFECTED WITH YELLOW PEVEE7-SOME PEESONAL 



OBSEEVATIONS. 



By Surgeon H. E. Carter. 



JULY, 1902. 



In a paper read before the American Public Health Association at 

 Buffalo, September 18, 1901, Dr. Doty, the quarantine officer of New 

 York, affirms the absence of secondary cases of yellow fever aboard ves- 

 sels — i. e., that while cases of this disease contracted ashore develop 

 aboard vessels, yet none are contracted aboard the vessel itself — that 

 is, the vessel does not become "infected" with yellow fever. 



The experience of other quarantine officers has been different, and it 

 may be of service then to group some cases already of record in which 

 the contrary was observed. It is not proposed to collate a number of 

 examples of vessels aboard which yellow fever was contracted, from the 

 literature of the subject, but to give very briefly the history of some 

 such vessels personally observed by the writer, from his own notes, 

 during a four years' service (1888 to 1891, inclusive) at the quarantine 

 of the Gulf, Chandeleur and Ship islands. Here were received all ves- 

 sels believed to be infected with yellow fever bound for all of the Gulf 

 ports, except for New Orleans and from Tampa south. Consequently 

 our clientele was considerable. The bulk of them, however, although 

 certainly the worst class of vessels which entered the Gulf of Mexico, 

 were not, in my opinion, "infected" when I received them— i. e., yel- 

 low fever could not then have been contracted aboard them. 



I will premise here that I accept without reservation the conveyance 

 of yellow fever by an infected mosquito of a certain kind, and that to 



2 SEC. c. 7 



