Neza-Chalco-Itza: One of Mexico City's many barrios, Neza-Chalco-Itza is the largest slum in the world with roughly four million people. Slums in Mexico city began growing in the early 1900s when the railroad brought new industry -- as well as new industrial zones -- to the city.
Bloodborne pathogens are infectious microorganisms in human blood that can cause disease in humans. These pathogens include, but are not limited to, hepatitis B (HBV), hepatitis C (HCV) and human immunodeficiency virus (HIV). Needlesticks and other sharps-related injuries may expose workers to bloodborne pathogens.
Bloodborne Pathogens Self-Study Unit. BLOODBORNE PATHOGENS are AN OCCUPATIONAL HAZARD for employees who may be exposed to blood and other potentially infectious materials that may result from the performance of an employee's duties. *Information in this unit was provided by UNCH Hospital Epidemiology, was adapted for use at UNC-CH, and was amended for use by USC.