Increasing number of people currently tend to have different problems related to the health. The most important factor contributing to increasing rate of people, who have caught the most popular illnesses such as inter alia HIV is that a variety of them were not aware of the fact which conditions contribute to improvement of the probability of catching above mentioned illnesses. Hence, we ought to keep in mind that there are a variety of different sources of knowledge that might help us learn to know the answer to the question in terms of how can you catch HIV? It is influential contemporarily to know presence of which factors contribute to catching this illness, as still there has been no medicine developed that would either prevent from it or cure people , who already suffer from it.