The growing tent city has alarmed county health officials and American Indian leaders, who say the lack of hygiene facilities and frequent reuse of needles have made the area ripe for infections and disease outbreaks. The camp has several known cases of a drug-resistant infection known as MRSA, or methicillin-resistant Staphylococcus aureus, which can lead to sepsis, pneumonia, bloodstream infections and death. There are also reports of hepatitis C, sexually transmitted illnesses, and scabies. MA