A common reason people avoid helping during an emergency is their fear of being exposed to infectious diseases. Although this is a very real concern, having knowledge about the diseases you may encounter and the ways to protect yourself can minimize the actual risk and keep you very safe. This section will discuss the many types of diseases out there, how they are transmitted, how they affect your body and what treatment is available. We will also drive home the profit of " Personal protective equipment" (PPE) and the need for "universal precautions." By having accurate information and being knowledgeable about your protection, you can provide excellent first aid care without endangering yourself.