Table 1. The demographic and clinical characteristics of 175 enrolled patients.

Characteristics		No.	Percentage (%)
Gender	Male	121	69.1
	Female	54	30.9
Age (y)	0-	82	46.9
	1-	50	28.6
	2-	14	8.0
	3-	22	12.6
	4–5	7	4.0
Diseases	Pneumonia	157	89.7
	Upper respiratory infections	4	2.2
	Septicemia	2	1.1
	Othersa	12	6.9

Note:

^aOthers included bronchitis, asthma, acute bronchiolitis and acute laryngotracheal bronchitis.