What percentage of African Americans has heterozygous sickle cell trait?

You are suspicious that a patient is suffering from active tuberculosis. Which of the following would be most appropriate?

A) Neither you nor the patient should wear a HEPA respirator. B) Both you and the patient should wear a HEPA respirator. C) You should wear an N95 mask. D) The patient should wear a HEPA respirator.

A physical exam must be performed on a patient within 72 hours of a hospital admission

Indicate whether the statement is true or false