MinuteClinic health care centers are staffed by board-certified family nurse practitioners and physician assistants who are trained to diagnose, treat and prescribe medication when it is part of the treatment plan for common family illnesses such as strep throat and ear, eye, sinus, bladder and bronchial infections. MinuteClinic also offers common vaccinations, such as flu shots, tetanus, pneumonia, MMR and Hepatitis A & B. MinuteClinic health care centers are open seven days a week, no appointment needs to be made in advance and visits typically take 10-15 minutes.