An athletic 12-year-old boy complains of left knee pain when he runs and plays sports. The pain resolves when he rests. He has otherwise been well. His physical examination is normal, except for swelling and increased prominence over the left tibial tubercle. Aradiograph of the left knee is normal. Which of the following is the most likely diagnosis?
Apreviously healthy male postal worker complains of fever, headache, myalgia, and cough for the past 3 days. He reports that several of his coworkers have also been ill with similar complaints. His leukocyte count is normal with a relative lymphopenia. Achest x-ray shows only enlarged hilar shadows. Which of the following is the most likely cause of this infection?
As a health officer, you have identified blindness among the elderly in your state as a cause of falls and resultant inability to perform activities of daily living. You try to prevent this by improving access to which of the following?
You participate in the global effort to eradicate poliomyelitis. A poliomyelitis outbreak has been identified in a community in Africa. You advise your outbreak investigation team that they must focus on transmission from which one of the following sources?
A 20-year-old student asks to have his vaccinations updated. You recommend that he be vaccinated for typhoid fever under which of the following circumstances?
A 50-year-old slaughterhouse worker complains of intermittent episodes of fever, malaise, weakness, and weight loss over the past several months. Several of his coworkers have experienced flu-like symptoms since last winter. Which of the following statements about his illness is correct?
You are asked by a company predominantly employing women to design an educational program to reduce morbidity and mortality due to cardiovascular disease. Which of the following statements should you include in this program to describe women's risk of cardiovascular disease?