1. Symptoms of Infant Pneumonia Infant pneumonia refers to a pulmonary infectious disease suffered by infants and young children aged 0-2 years. Early diagnosis and treatment are very important for the child\’s health. Common symptoms include: high fever, shortness of breath, cough, nasal congestion, loss of appetite, etc. 2. Causes of pneumonia in infants 1. Bacterial infection: The most common bacteria is Streptococcus pneumoniae. 2. Viral infections: including respiratory syncytial virus, adenovirus, etc. 3. Fungal infection: such as Candida, etc. 3. Preventive measures 1. Maintain indoor air circulation and maintain indoor hygiene. 2.