The wife of gulf war 90 vet recently died after suffering from this
disease, which she got from her deployed husband. After additional
diagnoses of liver cancer, she expired in 3 months.

KALA-AZAR, or Dum-Dum fever, a tropical disease, characterized by
remittent fever, anaemia and enlargement of the spleen (splenomegaly)
and often of the liver. It is due to a protozoon parasite (see
PARASITIC DISEASES), discovered in 1900 by Leishman in the spleen,
and is of a malarial type. The treatment is similar to that for
malaria. In Assam good results have been obtained by segregation.

This infection has been diagnosed in deployed troop in Irag and
Afghanistan.

http://69.1911encyclopedia.org/K/KA/KALA_AZAR.htm