85 



The city was then free of fever until April 2oth. On the 2oth a 

 focus of infection again developed ; disinfection apparently killed off 

 any infected mosquitoes, as the city was free from fever until May 

 6th when another focus developed. Disinfection again apparently 

 killed all infected mosquitoes, and no other focus of infection has 

 developed since this time, now nearly two months ago. 



During the past three months yellow fever has been introduced 

 into Havana from the outside three different times : once from Tam- 

 pico, once from an Army Transport which had visited several coast 

 ports, and once from an interior town. The two cases from the 

 shipping were promptly recognized by Dr. A. H. GLENNAN, Chief 

 of the Marine Hospital Service, and turned over to the Sanitary 

 Department. 



The third case came in from Santiago de las Vegas, and went to 

 one of the large private hospitals. 



From these facts I think we have cause for the belief that, by 

 pursuing present methods, not only can we rid Havana of yellow 

 fever but that its spread may be prevented, even when introduced 

 from the outside. This should be the ideal in all sanitary measures ; 

 and if this condition can be brought about most of the restrictions 

 now imposed upon commerce by quarantine can be done away with. 



September, 1901. 



**** 



The health conditions are decidedly the best ever attained, in 

 any month, for this city. The least number of deaths occurring in any 

 previous September, since 1889, was 496 in 1899 ; the greatest number, 

 2,397, in 1898 ; average, 877.45. For September, 1901, there were 

 339 deaths. 



****** 



It will be seen with regard to yellow fever that, for the month of 

 September during the past eleven years, the least number of deaths 

 occurred in the year 1899, when there were 18 deaths ; the greatest 

 number in the year 1896, when there were 166 deaths ; average, 70 

 deaths. This year we have had 2 deaths. 



Taking the yellow fever year as commencing April ist, and con- 

 sidering the record of the past eleven years, it is seen that, for the six 

 months up to the ist of October, the smallest number of deaths 

 from this disease occurred in the year 1899, when there were 36 



