IMCI is an integrated approach developed by WHO and UNICEF to reduce child mortality from major diseases. It focuses on clinical care for children under 5 in rural areas with limited resources. The goal is to improve health outcomes through better case management, health systems, and community practices. The case management process involves assessing children, classifying illnesses, treating or referring, and follow-up. Studies show IMCI effectively reduces mortality, though more rigorous evaluations are still needed.