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.
But for children under the age of 2, it is difficult to do spirometry to test for asthma. When a child is that young, providing a diagnosis âis an imperfect science,â says Reynolds J. Panettieri Jr., a pulmonologist with the University of Pennsylvania.