The flu virus in flu vaccines is a dead virus. The term to describe the virus in this situation is _______________. A) Attenuated B) Inactivated C) Toxin derived D) Immunoglobulin

Certain types of pathogens are unable to infect humans due to ________. A)  a reduction in human T cell populations B)  clonal selection C)  incompatible epitopes D)  species resistance E)  their lack of antigens F)  NONE of these terms accurately completes this sentence

What is the Laboratory diagnosis of influenza A virus subtype H1N1? And what are the Prevention, vaccination, and treatment for it?  Explain with drawing or pictures.

When the patient's mother expresses concern about his sister being reinfected with chickenpox, what is the most appropriate response?   A) Your concerns are valid, but his sister developed an active natural immunity to chickenpox because she has already been infected. B) Your concerns are valid and there is a high likelihood that his sister will become infected again. We should probably administer the vaccine. C) Your concerns are valid and there is no way to protect his sister from becoming reinfected except to keep her at least 15 feet from your son at all times. D) Your concerns are valid and if his sister is reinfected, her symptoms will be less severe than her initial chickenpox infection.