Prospectively clinically phenotype and the prevalence of asthma in HIV infected patients in the Duke ID Clinic~HIV infected asthmatic subjects meeting clinical definitions for asthma compared to HIV uninfected asthma subjects identified at the DAAAC and HIV infected non-asthmatic subjects.~Prospective immunological phenotyping - HIV-infected asthma subjects prospectively identified and clinically phenotyped compared to HIV-uninfected asthma subjects identified at the DAAAC and HIV infected non-asthma subjects.~Regarding the sampling method of probability sample: All samples for HIV infected asthmatic patients, HIV uninfected asthmatic patients and HIV infected non-asthmatics patients will be analyzed.~Retrospectively determine overall asthma prevalence and severity among HIV-infected patients. Retrospective immunological phenotyping (circulating cytokines) of HIV-infected patients utilizing available specimens in the Duke HIV Specimen Biorepository~HIV-infected asthmatic subjects meeting asthma definition compared to overall asthma prevalence in U.S. population~HIV-infected asthma subjects meeting asthma definitions compared to matched HIV-infected non-asthma subjects
The purpose of this study is to determine the prevalence and severity of asthma in patients with HIV. To determine the immunological phenotype of HIV-infected patients with asthma.