Human Infection with Avian Influenza Virus, Pakistan, 2007

摘要

Human infection with avian in. uenza (H5N1) virus raises concern for the possibility of a pandemic. We report 20 cases, which ranged from asymptomatic to fatal, in Pakistan in 2007. These cases indicate human-to-human-to-human transmission of this virus, and the number of cases may be higher than realized