Emerg Infect DiseidEmerging Infectious Diseases1080-60401080-6059Centers for Disease Control106032192640795Research ArticleHIV infection as a risk factor for shigellosis.BaerJ. T.VugiaD. J.ReingoldA. L.AragonT.AnguloF. J.BradfordW. Z.California Emerging Infections Program, San Francisco, California, USANov-Dec199956820823

We investigated cases of shigellosis in San Francisco and Alameda Counties identified during 1996 by active laboratory surveillance to assess the role of HIV infection as a risk factor for shigellosis. Dramatically elevated rates of shigellosis in HIV-infected persons implicate HIV infection as an important risk factor for shigellosis in San Francisco.