RESULTS 181 



The experts then issued a series of directions 

 upon : — 



1. The formation of oihng, screening, inspecting 

 and salting squads. 



2. Upon hourly reporting to headquarters. 



3. Upon how to fumigate. 



4. Necessity of reporting suspicious cases. 



5. Necessity of systematic sanitary surveys. 



6. That there is only one Authority in the city. 



7. AVarning against quack remedies. 



All these directions emphasised those which had 

 already been issued by the local authorities. 



Result of Campaign. — Yellow fever broke out in 

 an unprepared densely populated city (New Orleans) 

 in July. By August 12 the fever was at its height, 

 numbering on that day 105 cases. In the meantime 

 the prophylactic measures, including early notification, 

 isolation, fumigation, screening, and protection of the 

 water supplies, had begun to take effect, for in three 

 weeks from the notification of the first case the 

 number of fresh cases ceased increasing and it was 

 clear the fever was in hand. The infected stegomyias 

 on the wing had been killed and would no longer 

 carry infection, and a fresh supply of stegomyias 

 was rendered impossible owing to the fact that all 

 cisterns had been screened. Thus an outbreak which 

 in previous years would have developed into the usual 

 awful epidemic was in a few weeks at a comparatively 

 small cost completely stopped, and that in the face of 

 a dense population, open drains, and a sultry summer. 



