If a child with scabies attends day care or the affected person is institutionalized (such as in a nursing home or prison), then staff and others in close contact with the person should be treated. It is best to treat everyone simultaneously to minimize the risk that untreated people will reinfest treated people.
Education and Qualifications. To become a dental hygienist, you'll need either a 2- or 4-year degree in dental hygiene. Most programs are two years long and lead to an associate's degree. They are offered through community colleges and technical colleges.
In California, only an associate degree is required to become a hygienist. I have a bachelor's degree but I have no idea if any of my employers preferred it because I never asked. I've been working full-time for the past 16 years as a dental hygienist with only an associates degree in dental hygiene. In clinical practice hygienists are paid the same rate with or without a bachelors.