A reservoir host can harbour a pathogen indefinitely with no ill effects, with important implications for disease control. A single reservoir host may be reinfected several times. A host of predilection is the one preferred by a parasite. An amplifying host is one in which the level of pathogen can become high enough that a vector such as a mosquito that feeds on it will probably become infectious.
Trends in the rates of treatment for ADHD were presented by age, gender, race, family income, and health insurance status. Trends in ADHD treatment were also determined by annual numbers of visits, use of pharmacotherapies, and types of health care professionals. RESULTS: The rate of outpatient treatment for ADHD increased from 0.9 per 100 children in 1987 to 3.4 per 100 children in 1997.
1 Methylphenidate (such as Concerta or Ritalin) is often the first choice for treating ADHD. 2  Dextroamphetamine or the combination dextroamphetamine and amphetamine (Adderall) is usually the second choice when the person does not improve with methylphenidate.3  But either may be the preferred medicine for older children.ost of the medicines used to treat ADHD come with a U.S. Food and Drug Administration (FDA) warning about possible heart-related or mental problems. Before starting a medicine for ADHD, tell your doctor if your child or you have any heart problems, heart defects, or mental health problems.