- Patients receiving (a) and (b) plus a weekly nutritional supplement in the form of two 400g cans of meatballs and spaghetti in tomato sauce The group of 'comparison' households comprises the fourth group. Trained enumerators will conduct follow-up interviews with all patients and households at approximately six- and at twelve-months respectively. In addition, the ARV coordinator and other providers working in the ARV treatment programme at each of the twelve selected health care facilities will be interviewed by trained enumerators, at baseline and again at six- and at twelve-months. Clinical data will be obtained from patient files at baseline and at completion of the study. Using these data, various outcomes of importance to the study will be compared between the four study groups, using experimental and non-experimental methods.