There are a number of ways in which someone can contract HIV, which include the following ; sex without a condom, using injecting equipment, receiving a blood transfusion from someone who has HIV, and being passed from a mother to her baby. Now the next question to ask is, how to protect yourself from these types of situations. Having protecting sex a very important step to take for one, also PreP therapy which is available. This type of therapy if taken correctly, will prevent people who have been exposed from HIV positive people, from contracting the infection. Moreover, if a HIV positive woman who is pregnant, takes proper treatment for the infection, it can greatly reduce the risk of the baby contracting the infection. And lastly, if receiving a blood transfusion, its a good idea to ask the nurse if the blood has been tested for HIV.