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.
Hepatitis C. The most common blood-borne infection in the U.S. is hepatitis C. The hepatitis C virus (HCV) can cause a contagious disease that can severely damage your liver, but most people don't know they have it until the disease has already damaged the organ.he most well-known disease caused by bloodborne pathogens is AIDS (acquired immunodeficiency syndrome), which is caused by the human immunodeficiency virus (HIV).