Explain how a vaccine works to give a person active acquired immunity. Then do some online research to answer the question: How does 'active acquired immunity' relate to the phrase 'herd immunity'?

Complete the following sentence that describe the alimentary canal and its walls: the is composed mostly of connective tissue, nerves, and vessels, which to nourish surrounding tissues.

You are assigned to care for david ramsey, a 22-year old male patient with back injury secondary to being thrown from a motorcycle. did nt damage the spinal, but the computed tomography revealed a compression fracture at l-2. david complains of severe back pain with numbness and tingling in the lower extremities. what assessments are indicated based on this nursing diagnosis? list other major nursing diagnoses based on david’s clinical presentation?

Anurse is caring for a client who has nicotine use disorder and asks about taking varenicline. the nurse should identify that which of the following conditions is a contraindication for this medication? a. rheumatoid arthritis b. copd c. anorexia nervosa d. major depressive disorder