Pathogenic E. coli strains use a multi-step scheme of pathogenesis that is similar to that used by other mucosal pathogens, which consists of colonization of a mucosal site, evasion of host defences, multiplication and host damage.
Research suggests that autism can be reliably diagnosed by age 2, but this study found that fewer than half of children with autism are diagnosed by age 5. Autism is a complex neurodevelopmental disorder that affects as many as 1 in 88 U.S. children, according to the U.S. Centers for Disease Control and Prevention.
Resources - About Autism Autism is a developmental disability that typically appears during the first three years of life. It is the result of a neurological disorder that affects the functioning of the brain, and occurs in approximately 1 out of every 68 births. Autism is five times more prevalent in boys (1 in 42) than girls (1 in 89) and knows no racial, ethnic or social boundaries.