Question 1

Explain the differences between the Salk and Sabin polio vaccines.Why have most wealthy countries switched from using the Sabin vaccine to using the older Salk vaccine?

Accepted Answer

The answer of Explain the differences between the Salk and...

Question 2

For a vaccine to be effective, it is more important that it stimulate a humoral immune response to a virus rather than a cellular immune response.

Accepted Answer

Both humoral (antibody-mediated) and cellular (T-cell mediated) immune responses are important for the effectiveness of vaccines. The humoral response targets pathogens outside cells, while the cellular response targets infected cells.

Question 3

Vaccines will never be able to treat patients chronically infected with hepatitis B virus because they can not break immunological tolerance.

Accepted Answer

While it is true that current vaccines are not able to treat patients already chronically infected with hepatitis B virus, research is being done on therapeutic vaccines that can potentially break immunological tolerance and stimulate the immune system to fight the virus in these individuals. Therefore, it is not accurate to say that vaccines will never be able to treat chronic hepatitis B.

Question 4

Describe the benefits of using subunit vaccines rather than live or inactivated virus vaccines.What are some of the new techniques being investigated to produce recombinant vaccines that would improve the effectiveness of these types of vaccines?

Accepted Answer

The answer of Describe the benefits of using subunit vaccines...

Question 5

Early vaccines for rabies virus that contained rabbit spinal chord proteins caused autoimmune reactions in some people.

Accepted Answer

Early vaccines for rabies virus did contain rabbit spinal chord proteins and some people developed autoimmune reactions as a result.

Quiz 35: Antiviral Vaccines

Explain the differences between the Salk and Sabin polio vaccines.Why have most wealthy countries switched from using the Sabin vaccine to using the older Salk vaccine?

For a vaccine to be effective, it is more important that it stimulate a humoral immune response to a virus rather than a cellular immune response.

Vaccines will never be able to treat patients chronically infected with hepatitis B virus because they can not break immunological tolerance.

Describe the benefits of using subunit vaccines rather than live or inactivated virus vaccines.What are some of the new techniques being investigated to produce recombinant vaccines that would improve the effectiveness of these types of vaccines?

Early vaccines for rabies virus that contained rabbit spinal chord proteins caused autoimmune reactions in some people.