10 
LOSS THROUGH INSECTS THAT CARRY DISEASE. 
by States is available only for the following registration State-: 
California. Colorado. Connecticut, District of Columbia, Indiana. 
Maine. Maryland, Massachusetts, Michigan. New Hampshire, New 
Jersey, New York, Pennsylvania, Rhode Island. South Dakota, and 
Vermont, all of which are Northern State-. For these States the 
census reports from 1900 to 1907 
rates: 
inclusive, give the following death 
Table I. -Deaths <hi< to mnbirin in tin registration States, 1900-1907, 
Year. 
Number 
of deaths 
from ma- 
laria per 
100.000 
popula- 
tion. 
Total 
deaths 
from ma- 
laria. 
Year. 
Number 
of deaths 
from ma- 
laria p.-r 
100.000 
popula- 
tion. 
Total 
deaths 
from ma- 
laria. 
1900 
7.9 
6.3 
5.4 
4.3 
4.2 
2. 134 
1,791 
1,738 
1,410 
1,391 
1905 
3.9 
2.8 
1 3M 
1901 
1906 
1 415 
1902 
1907 
i lfirt 
1903 
1904 
Estimating, from the preceding table, the average annual death 
rate due to malaria at 4.8 per 100,000 population, and considering 
that the registration area includes only 16 of the Northern States 
(assuming fairly, however, that the death rate in the other Northern 
States is the same) , it seems reasonably safe to conclude that the death 
rate from malaria for ^he whole United States must surely amount 
to 15 per 100.000. It is probably greater than this, since the statistics 
from the South are city statistics, and malaria is really a country 
disease. Thus it is undoubtedly safe to assume that the death rate 
for the whole population of the United States is in the neighborhood 
of 15 per 100.000. This would give an annual death rate from 
malaria of nearly 12.000 and a total number of deaths for the 8-year 
period 1900-1007 of approximately 06,000. 
But with malaria perhaps as with no other disease does the death 
rate fail to indicate the real loss from the economic point of view. A 
man may >uffer from malaria throughout the greater part of his life, 
and his productive capacity may be reduced from 50 to 75 per cent, 
and yet ultimately he may die from some entirely different immediate 
cause. In fact, the predisposition to death from other causes brought 
about by malaria is so marked that if. in the collection of vital statis- 
tics, it were possible to ascribe the real influence upon mortality that 
malaria possesses tin- disease would have a very high rank in mor- 
tality tables. Writing of tropical countries, Sir Patrick Manson 
declares that malaria causes more death-, and more predisposition to 
death by inducing cachectic states predisposing to other affections, 
than all the other parasites affecting mankind together. Moreover, 
it has been shown that the average life of the worker in malarious 
