36 
Brazilians arriving: from non yellow fever States occupy the same 
position as do the foreigners. They are non-immuncs, and are 
susceptible to the disease. We have attended cases of the disease 
occurring in natives and Indians from the Acre and Purus districts, 
and in children and adults coming from southern parts of tin* Republic. 
The Brazilian child is susceptible to yellow fever, and we have had 
opportunities of studying the disease in infants and young children 
from one to two years of age. The symptoms are of such a character 
that a diagnosis can only be made with extreme difficulty. In the 
average case the mildness of the symptoms cannot attract the attention 
of the mother. Irritability, crying 1 , mild bilious vomiting associated 
with slight fever in an infant only a few months old is almost always 
ascribed to gastric disturbances. flic more so as the infant recovers 
in a few days. With children there may be languor, possibly head¬ 
ache, disinclination to eat, mild fever, and possibly vomiting; the 
child may be up and moving about, its urine may or may not contain 
albumin and casts ; thirst is always pronounced ; vomiting may be 
absent, but it is only when ‘‘black Vomit ‘ occurs that the parents 
have any idea of the child’s disease. 
\\ ith such vague and insidious symptoms it is not astonishing 
cHndre°n PreCaUti0nS ^ tal<Cn toprcvent Stegomyia from biting these 
We have been fortunate to see a number of mild cases resembling 
nfluenza gastric disturbance, etc. with fever of the types so well 
desenhed by Marchoux and Simond • Our own attach',n j, was 
u me and JT ^ mflUenZa “ d *>» albumin in the 
MaW Brn 7 hecame «Wy ' immune 1 
occurle f, ' f anS SUffer 'r m ° St SUSpid ° US symptoms which, if 
attack of yellow f ^T n ° n '™ mune ’ would be ascribed to an 
ocLur when toe T' ‘ ^ ** these cases usually 
neighbourhood. We hope^otabr T"?' “ h ° USeS 
of a series of these m 1 ^ a ater date our observations 
resulting from them. ^ ^ * S ™ d chi,dren and the infection 
We do not think it neep^-m, 
yellow fever, as the symptoms etc havTb d3ta regard ' nE 
-—--— __ _ ’ C ’ nave bec « SO often described. It 
Pasteur, Fev., )’ 9 o6. * S,tmoad > K L -’ Etudes sur 1.' Ann. de Hurt 
