Health care associated infections also termed as nosocomial infections are notable cause of morbidity and mortality especially in resource limited countries like Pakistan. Newborns and aged people have more probability of being infected by Health care associated infections because of immunosuppressant. Central line associated blood stream infections (CLABSI) are considered as one of the promising negotiator associated with Health Care associated infections. Improper health care setting and unaware medical staff play a championship protagonist in prevalence of health care associated infections. Standard hygienic measures should be adopted to reduce risk of Health care associated infections. So, there is a pressing need to take on control policies by Government to handle this dilemma. This chapter gives new intuition to healthcare associated microbes, infections and provides comprehensive detailed on ironic precaution to scientific community.