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.
334 million people have asthma. 14% of the worldâs children experience asthma symptoms. 8.6% of young adults (aged 18-45) experience asthma symptoms. 4.5% of young adults have been diagnosed with asthma and/or are taking treatment for asthma.