Biology ยท General Awareness

Vaccination and Immunity

997 Questions

This hub presents questions focused on vaccination and human immunity. It covers essential topics such as herd immunity, non-specific immunity, antigens, and historical vaccine developments. These concepts are crucial for general science sections in medical and civil service exams.

Herd immunity functionsNon-specific immunitySmallpox vaccinationInterferon proteinsAntigen propertiesImmunological amnesia

Vaccination and Immunity Questions

Multiple choice

How do interferons stimulate the immune system to combat viral infections?

  1. By increasing the production of antibodies

  2. By activating natural killer (NK) cells

  3. By enhancing the activity of macrophages

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Interferons stimulate the immune system in various ways to combat viral infections. They increase the production of antibodies, activate natural killer (NK) cells, enhance the activity of macrophages, and promote the differentiation of T cells, collectively contributing to the body's antiviral defense.

Multiple choice

What is the role of interferon-stimulated genes (ISGs) in the antiviral effects of interferons?

  1. They encode proteins that inhibit viral replication

  2. They promote the production of antibodies

  3. They enhance the activity of NK cells

  4. They regulate cell growth and differentiation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Interferon-stimulated genes (ISGs) are a group of genes whose expression is induced by interferons. The proteins encoded by ISGs play a crucial role in the antiviral effects of interferons. These proteins can directly inhibit viral replication, interfere with viral assembly and release, and modulate the immune response to enhance viral clearance.

Multiple choice

What is the role of interferons in the treatment of viral infections?

  1. They can directly inhibit viral replication

  2. They can stimulate the immune system to combat the infection

  3. They can reduce the severity of symptoms

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Interferons have therapeutic potential in the treatment of viral infections. They can directly inhibit viral replication, stimulate the immune system to combat the infection, and reduce the severity of symptoms. Interferon-based therapies have been used to treat various viral infections, including hepatitis B, hepatitis C, and influenza.

Multiple choice

Which of the following is NOT an example of a vaccine-preventable disease?

  1. Measles

  2. Mumps

  3. Rubella

  4. Cancer
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Cancer is not a vaccine-preventable disease.

Multiple choice

Which vaccine is given to protect against measles, mumps, and rubella?

  1. MMR

  2. DTP

  3. Hepatitis B

  4. Polio
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

MMR vaccine is a combination vaccine that protects against measles, mumps, and rubella.

Multiple choice

Which vaccine is given to protect against polio?

  1. MMR

  2. DTP

  3. Hepatitis B

  4. Polio
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Polio vaccine is a vaccine that protects against polio.

Multiple choice

What is the recommended number of doses of Hepatitis B vaccine for infants?

  1. 1

  2. 2

  3. 3

  4. 4
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Infants should receive three doses of Hepatitis B vaccine.

Multiple choice

Which vaccine is given to protect against rotavirus?

  1. MMR

  2. DTP

  3. Hepatitis B

  4. Rotavirus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Rotavirus vaccine is a vaccine that protects against rotavirus.

Multiple choice

Which vaccine is given to protect against Japanese Encephalitis?

  1. MMR

  2. DTP

  3. Hepatitis B

  4. Japanese Encephalitis
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Japanese Encephalitis vaccine is a vaccine that protects against Japanese Encephalitis.

Multiple choice

What is the recommended number of doses of measles vaccine for children?

  1. 1

  2. 2

  3. 3

  4. 4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Children should receive two doses of measles vaccine.

Multiple choice

Which vaccine is given to protect against tetanus, diphtheria, and pertussis?

  1. MMR

  2. DTP

  3. Hepatitis B

  4. Polio
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

DTP vaccine is a combination vaccine that protects against tetanus, diphtheria, and pertussis.

Multiple choice

Which vaccine is given to protect against chickenpox?

  1. MMR

  2. DTP

  3. Hepatitis B

  4. Varicella
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Varicella vaccine is a vaccine that protects against chickenpox.

Multiple choice

What is the recommended number of doses of polio vaccine for children?

  1. 1

  2. 2

  3. 3

  4. 4
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Children should receive four doses of polio vaccine.

Multiple choice

Which vaccine is given to protect against hepatitis A?

  1. MMR

  2. DTP

  3. Hepatitis A

  4. Polio
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hepatitis A vaccine is a vaccine that protects against hepatitis A.

Multiple choice

Which vaccine is given to protect against typhoid?

  1. MMR

  2. DTP

  3. Hepatitis B

  4. Typhoid
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Typhoid vaccine is a vaccine that protects against typhoid.