Aim: To describe the process of follow-up in primary care facilities where the Integrated Management of Childhood Illness (IMCI) strategy was implemented. IMCI was developed by WHO and UNICEF as an integrated approach to manage sick children under 5 y of age and aims to reducemortality and morbidity. Methods: From August 2001 to February 2002, 229 sick children who had a health condition included in the IMCI case management guidelines were seen in six family health care facilities in Brazil. We analysed the care provided to 153 children who were recommended for a 2-or 5-d follow-up visit. Children who did not return were visited and assessed at home. Results: Only 87 children (56.9%) timely returned for follow-up: 70 had improved, eight presented the same health conditions, five were worse and four had a new problem. The main reasons given for not returning for follow-up were: the child had improved (35.1 %) and other family priorities (47.4%). Home visits showed that, although most children had improved (n = 49), some had a new health problem and one child was sick enough to be referred. Prescription of antibiotics was associated with increased probability of returning for a follow-up visit (RR = 1.64 1.22-2.20 ,p = 0.001). Conclusion: Adherence to followup was just over 50%, mostly because the condition had already resolved, but some children were still sick and needed intervention. Training on counselling on the recognition of danger signs and when to return for a follow-up visit must be reinforced. Aim: To describe the process of follow-up in primary care facilities where the Integrated Management of Childhood Illness (IMCI) strategy was implemented. IMCI was developed by WHO and UNICEF as an integrated approach to manage sick children under 5 y of age to reduce motality and morbidity. Methods: From August 2001 to February 2002, 229 sick children who had a health condition included in the IMCI case management guidelines were seen in six family health care facilities in Brazil. We analyzed the care provided to 153 children who were Recommended for a 2-or 5-d follow-up visit. Children who did not return were visited and assessed at home. Results: Only 87 children (56.9%) timely returned for follow-up: 70 had improved, eight presented the same the main reasons given for not returning for follow-up were: the child had improved (35.1%) and other family priorities (47.4%). ch Prescription of antibiotics was associated with increased probability of returning for a follow-up visit (RR = 1.64 1.22-2.20, p = 0.001). Conclusion: Adherence to followup was just just over 50%, mostly because the condition had already resolved, but some children were still sick and needed intervention. Training on counseling on the recognition of danger signs and when to return for a follow- up visit must be reinforced.