Question

1. What type of hypersensitivity reactions would be characterized by accumulation of IgE leading to hives, hay fever, asthma and a system anaphylaxis?

Group of answer choices

A. Type III hypersensitivities

B. Type II hypersensitivities

C. Type IV hypersensitivities

D. Type I hypersensitivities

2. There has been debate about keeping smallpox virus stored since the disease has been eradicated. There are arguments for keeping the virus because most of the population of the US has no immunity or weakening immunity to the small pox virus.

TRUE OR FALSE

3. An example of a vaccine that is given as a single dose that can be long lasting, but can sometimes cause disease in the immunocompromised and should not be given to pregnant women is called _________________________.

Group of answer choices

A. Rabies vaccine

B. Hep B vaccine

C. Diptheria toxoid vaccine

D. MMR vaccine

4. A type of attenuated vaccine that affords lifelong immunity especially with viruses:

Group of answer choices

A. influenza

B. Rabies

C. Measles

D. Hep B

Thank you!

Answer 1

Q1. Ans is D.

Characteristics	Type 1	Type 2	Type 3	Type 4
Time of onset of reaction	30 mins to 8 hours	12 to 72 hours	3 - 8 hours	24 to 48 hours
Reaction mediators	IgE, histamine, serotonin	IgG, IgM and complement	IgG, IgM, neutrophils, eosinophils, lysosomal enzymes	T lymphocytes,macrophages
Response to skin	wheal and flare	-	erythema and edema	erythema and induration
Passive transfer with	serum	serum	serum	T cells
Examples	anaphylaxis,asthma,hayfever, allergic insect bite	Transfusionreaction hemolytic disease of newborns	Arthur's reaction, serum sickness	tuberculin test, contact dermatitis, graft rejection

Thus, we can say. Antigen exposure causes activation of cells which releases its content and causes immune reaction is known as type 1 hypersensitivity reaction.