We developed an IgE-capture ELISA and measured mosquito saliva specifi
c IgE antibodies in 27 children sensitive to mosquito bites. Children
with large 15-min bite wheals had significantly higher (P<0.0005) mosq
uito saliva-specific IgE levels than children with small wheals. In th
e latter group, the saliva-specific IgE level was significantly higher
(P=0.031) than the levels of six infants never exposed to mosquitoes.
A positive correlation (r=0.65; P=0.0002) was found between the size
of the 15-min wheal and the mosquito saliva-specific IgE antibody leve
ls. These results further support the role of mosquito saliva-specific
IgE antibodies in the pathogenesis of mosquito-bite whealing. Compare
d to immunoblotting, IgE-capture ELISA provides a quantitative method
to measure mosquito saliva-specific IgE antibodies.