Rickettsia parkeri infection after tick bite, Virginia.

We describe a man with a febrile illness and an eschar that developed at the site of a tick bite. Rickettsia parkeri was detected and isolated from the eschar. This report represents the second documented case of R.

Diverse HIV-1 subtypes and clinical, laboratory and behavioral factors in a recently infected US military cohort.

Objective: To describe the demographics, risk behaviors, and HIV-1 subtypes in a large cohort of recently HIV-infected military personnel.

Design: Descriptive, cross-sectional study.

Methods: US military personnel with recent HIV seroconversion from six medical referral centers were enrolled with a self-administered questionnaire, CD4 cell counts, syphilis and hepatitis B serologies, plasma viral RNA levels, and HIV-1 subtype nucleic acid sequencing.