Long Island Association for AIDS Care, Inc. (LIAAC)The Long Island Association for AIDS Care, Inc. (LIAAC) is a community-based, not-for-profit agency that provides services and support for Long Islanders with Asthma, Diabetes, Heart Disease, Hepatitis C, HIV/AIDS, Mental Health, Obesity, and Substance Abuse. It also provides services for those at high risk for HIV infection and other infectious and chronic diseases.