What kind of antibodies cause donor blood to clot during a transfusion reaction?  

The _____________ is a program used to identify improper payments from Medicare claims and to recover overpayments. (Do not use acronym, spell it out)

The Hemophilus infuenzae type B (HIB) vaccine is composed of a protein backbone connected to just a piece of the capsule of the bacterium. What type of vaccine is this?

Not only did smallpox often leave disfiguring scars on the skin, it also could result in blindness.

When T cell recognizes a cell with an odd MHC I, it will release perforins that:

After the first exposure to a novel antigen, we may develop symptoms (e.g., fever, congestion, malaise) to fight off the infection while we create antibodies for it. Do symptoms typically appear with a second exposure?

Which of the following statements is correct about the polio and the polio vaccine? Mark all that apply.

In 1985, a vaccine for Hemophilus influenzae type B (HIB) was created. In the decades since, the incidence of HIB meningitis among the infants, toddlers, and small children has almost disappeared in rich countries.

The discoverer of the pathogenic bacterium Hemophilus influenzae wrongly assumed that the microbe was the cause of the flu. 

Which of the following statements are correct about smallpox? Mark all that apply.