Michele T Yeh

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Ixodid ticks were collected from Connecticut, Massachusetts, Missouri, Pennsylvania, Rhode Island, and British Columbia (Canada) during 1991 to 1994 to determine the prevalence of infection with hemocytic (blood cell), rickettsia-like organisms. Hemolymph obtained from these ticks was analyzed by direct and indirect fluorescent antibody (FA) staining(More)
Phenoloxidase activity in Amblyomma americanum, Dermacentor variabilis, and Ixodes scapularis was assayed. No phenoloxidase activity was detected compared to high activity through time in larvae of the greater wax moth (Galleria mellonella). We conclude that activated prophenoloxidase does not act as an opsonin in ixodid ticks tested to date.
The duration of tick attachment is one factor associated with risk for human infection caused by several tick-borne pathogens. We measured tick engorgement indices at known time intervals after tick attachment and used these indices to determine the length of time that ticks were attached to tick-bite victims in selected Rhode Island and Pennsylvania(More)
A new indirect fluorescent-antibody (IFA) assay with antigen produced in vitro in the human promyelocytic leukemia cell line HL60 was used to identify the first recognized case of human granulocytic ehrlichiosis in Rhode Island. This IFA assay was used to detect granulocytic ehrlichiae in white-footed mice and in a dog inhabiting the area surrounding the(More)
OBJECTIVES The objective of this study was to test whether the experience of childhood sexual abuse is associated with long-term receptive language acquisition and educational attainment deficits for females. METHODS Females with substantiated familial childhood sexual abuse (n=84) and a nonabused comparison group (n=102) were followed prospectively for(More)
We described the parasitemia, hematologic changes, and immunity developed by golden hamsters during 8 wk of infection with Babesia microti following experimental inoculation. All 8 hamsters used in this study were readily infected. Animals attained peak parasitemias asynchronously but within a 2-wk period. Most of the animals reached their peak parasitemia(More)
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