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.
Asthma is increasing every year in the US. 1  Asthma cost the US about $3,300 per person with asthma each year from 2002 to 2007 in medical expenses. 2  Medical expenses associated with asthma increased from $48.6 billion in 2002 to $50.1 billion in 2007.