4 o 
ANKYLOSTOMIASIS 
This is one of the most prevalent diseases in the State, and aU 
parts of the Amazon region appear to be infected. 
In 1906 we reported on the seriousness of the disease, as observed 
by us in Iquitos, Peru. We found all classes of the Peruvians to be 
infected, and vve believed, from examination of the Indians, that the 
country right up to the base of the Andes was infected with this 
parasite. 
In Manaos vve have made a large number of examinations, and 
from our results we estimate that quite 88 per cent, of the population 
of the State of Amazonas harbour the parasite. All classes of the 
community show infection. 
Number 
examined 
Number 
infected 
Percentage 
Hospital Patients — 
Children 
*93 
Adults ... 
. 
180 
93-26 
• • • * • • 
783 
691 
88-25 
Indigent Class — 
Children 
Adults ... 
452 
433 
9579 
Better Class — 
• • • 
398 
394 
98-99 
Children 
Adults ... 
••• 
+19 
405 
96-65 
Foreigners — 
490 
378 
77**4 
Labouring class 
187 
69 
Better class 
"1 
123 
6577 
---________ 
______ "| 
28 
40-57 
t otal examined ... 
total infected 
2,991 
Children infected 
-- 95-67 % 
• 87-55% 
- 9 ° 7 I % 
Percentage infected 
2.632 
87-99 
Adults infected ... 
Brazilians infected 
and show that the soil must^e h ^ ° bservations in Iquito: 
The parasite has i ™c he ™ lly lnf ected. 
"8. t. old „„ " , “" d " »f to, a„ „„„ 
greater anaemia than childrei 
