A Study on Some Stochastic Models for HIV Infection and AIDS

In the study of HIV infection and its progress to AIDS the antigenic diversity of the invading antigen plays a vital role. The human immune system fails after a certain stage. The invading antigens namely the HIV develop stronger measures to suppress the human immune system and the antigenic diversity is one of the strategies adopted by the invading antigen. As and when the antigenic diversity crosses the threshold level the human immune system fails completely and the seroconversion occurs. There are very many situations in which this phenomenon occurs. Suitable stochastic models are developed by different authors to meet properly the situation. Using such models an attempt is made to estimate the likely time at which the seroconversion occurs.