“…In our tertiary medical facility, many patients with severely impaired mobility, such as those with a chromosomal abnormality, cerebral palsy, sequela of hypoxic encephalopathy, and neuromuscular diseases, were hospitalized for pneumonia (Table 1). These patients generally have obstructive and restrictive respiratory disorders, making it difficult to clear out sputum from airways (13,14), and are prone to develop lower respiratory tract infection due to oral bacteria (15). In the patients hospitalized at our tertiary medical facility for pneumonia, the proportion of patients without underlying diseases was higher in children aged < 2 years, and the number of the hospitalizations for pneumonia other than confirmed viral or mycoplasmal pneumonia in this age group decreased after the implementation of official financial support for PCV vaccination.…”