Question

Vaccine is not available for
A. Whooping cough
B. Dengue
C. Measles
D. Tetanus

Answer 1

Hint: Vaccines contain live attenuated or killed microorganisms, which are injected to prevent us from different diseases. The vaccines make the body recognizable to a particular organism so that our body mounts an immune response the next time when it attacks again. However, developing vaccines for viruses undergoing mutations or having many serotypes is difficult.

Complete answer:
Option A Whooping cough: whooping cough is respiratory disease which is communicable and transferred from one person to another by cough. It was more predominant in children and caused dry cough with deep breaths which sounded like ‘Whoops’. Vaccine is available for whooping coughs in the name of DTaP and Tdap.
So, option A is not the correct option.
Option B Dengue: the dengue is caused by virus which has many serotypes (meaning various types) so if a vaccine is valid for one subtype it becomes ineffective when caused by other subtype of virus and therefore, it is difficult to develop vaccine for dengue.
So, option B dengue is the correct option.
Option C Measles: measles is caused by measles virus and is accompanied with fever, runny nose etc. It is a communicable disease. Measles can be easily treated by vaccine.
So, option C measles is not a correct option.
Option D Tetanus: tetanus is caused by bacterium which leads to muscle contractions and spasms as well as it can also be fatal. Tetanus is prevented by tetanus toxoid vaccine.
So, D is not the correct option.

Hence, Option B Dengue is the correct answer.

Note:
The dengue virus has four types (or serotypes) and if a person gets vaccine for one type he or she may gain attack by some other type and hence no vaccine is developed for all the four types and hence dengue can’t be treated by vaccination only.