E. coli and other facultative anaerobes constitute about 0.1% of gut flora, and fecalâoral transmission is the major route through which pathogenic strains of the bacterium cause disease.
Asthma symptoms in children ages 5-11. Common asthma signs and symptoms in children ages 5 to 11 include: 1  Coughing, particularly at night. 2  Wheezing. 3  Difficulty breathing. 4  Chest pain, tightness or discomfort. 5  Avoiding or losing interest in sports or physical activities.
Number of adults aged 18 and over who currently have asthma: 18.4 million Percent of adults aged 18 and over who currently have asthma: 7.6% Source: Summary Health Statistics Tables for U.S. Adults: National Health Interview Survey, 2015, table A-2 [PDF â 186 KB] Number of children under age 18 years who currently have asthma: 6.2 million Percent of children under age 18 years who currently have asthma: 8.4% Source: Summary Health Statistics Tables for U.S. Children: National Health Interview Survey, 2015, table C-1 [PDF â 83 KB]