Reducing the number of cases to zero demands identifying and breaking all new chains of transmission, a task that still faces major obstacles — not least the fast approaching rainy season. (scientificamerican.com)
Their cohort study analyzed HIV testing data collected by the San Diego County Department of Public Health and the San Diego Primary Infection Cohort between 1996 and 2012, and used genetic analysis to identify local chains of transmission. (sciencedaily.com)
But Ball, Simon - Loriere, and colleagues approach this conclusion most cautiously, stressing that epidemiologic factors, such as «increased circulation in urban areas that in turn led to larger chains of transmission,» likely were the most important driver. (sciencemag.org)