Prison patients are never alone and never without supervision and rules, and the medical staff is always negotiating its power with the adminsitration. The patient-doctor relationship can become distorted in this setting.
Both public health agencies and vaccine companies have a stake in promulgating good information about vaccines: where the government sees gaps in immunization coverage, vaccine manufacturers see gaps in market coverage. Why shouldn't they work together to close them?
Two bioethicists argue that prenatal disability screening promotes negativity toward the disabled and gives parents the ability to selectively form families.