80 



MICHIGAN ACADEMY OF SCIENCE. 



ISOLATION AND DISINFECTION RESTRICTED DIPHTHERIA IN 1890. 





Diphtheria in J&iehigan in l8?0:-(?xhi biting the average 

 numbers of eases and deaths fjer outbreak :- in all out- 

 breaks in which isolation and Disinfection were JbotA, 

 %/fcglected'j and in all ouihreafts in which both u/ere (fn- 

 "orced* (Comfoiled in the off iee of the Secretary of l^e State 



toard of ]HeaUh,frorn re jo or is m ade hu local health officers. ) 



§ ^Ssolatio n and Bis infection, 

 §£ 



^a I Jl i/erage 

 5 fc| Cases. 



<Jfeglectec£ . 



Ssolation and Disinfection 



Average • 



Plate 530. 



