INSECTS AND DISEASE 
TRYPANOSOME 
: Protozoan which causes Sleeping 
Sickness of Central Africa. 
Cn _ 
e | 
Bacillus of Bubonic Plague 
y 
LEISHMANIA 
Protozoan parasite which causes 
Indian kala-azar or dum-dum fever. 
Fig. 37. MODELS OF BLOOD PARASITES 
American Museum of Natural History 
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