R. Kannan, G. Parthasarathi, A Stochastic Approach to Determine Seroconversion Time under Alertness using Erlang Truncated Exponential Distribution, Journal of Engineering and Applied Sciences, Volume 15,Issue 6, 2020, Pages 1573-1578, ISSN 1816-949x, jeasci.2020.1573.1578, (https://makhillpublications.co/view-article.php?doi=jeasci.2020.1573.1578) Abstract: In the study of HIV infection and its consequences the seroconversion of infected is a vital event. The HIV virus is commonly transmitted via. unprotected sexual activity, blood transfusions, hypodermic needles and from mother to child. The concept of alertness is gaining the greater important now a days in view of both prevention and delaying the process of seroconversion. Keywords: Acquired immune deficiency syndrome;human immune deficiency virus;seroconversion;antigenic diversity threshold and alertness;exponential distribution;simulated data