Effectiveness of Point-of-care Lung Ultrasound for the Management of Childhood Lower Respiratory Infections

The goal of this clinical trial is to evaluate the effectiveness of point-of-care lung ultrasound versus chest X-ray for the management of childhood lower respiratory infections in a low-resource setting. The main question it aims to answer is: Is point-of-care lung ultrasound as effective as chest X-ray for the management of childhood LRIs in a low-resource setting? Participants will be assigned to either a point-of-care lung ultrasound group (intervention) or a chest X-ray group (control), to compare the effect on overall case management and various clinical outcomes (time to symptom resolution, rate of antibiotic use, length of stay, treatment costs).