LevelsofPAHmetabolitesamongtheCCCEHchildrenthatlive
in NewYorkCityaresubstantiallyhigherthanUSnationalre-
ference valuessuggestingpossiblegreaterriskforPAH-associated
diseases. HerewereportthatrepeatedhighmeasuresofPAHex-
posure attwoagesincreasedtheriskofdevelopingsensitization
to cockroachallergeninchildrenbetweentheagesof5and
9 years.