Which of the following diseases CANNOT be prevented by vaccination?

Beri beri

The correct answer is Option (2)- Beri beri

Beri beri is the disease that CANNOT be prevented by vaccination.

Explanation:

• Beriberi is a nutritional disorder caused by a deficiency of thiamine (vitamin B1) in the diet.
• It primarily affects the nervous system and cardiovascular system, leading to symptoms such as weakness, fatigue, nerve damage, and heart problems.
• Unlike diseases such as rabies, typhoid, and measles, which can be prevented by vaccination, beriberi is not caused by an infectious agent like a virus or bacterium.
• Instead, it is caused by inadequate intake of thiamine-rich foods, such as whole grains, legumes, nuts, and seeds.
• Beriberi can be prevented and treated by ensuring an adequate intake of thiamine through a balanced diet or thiamine supplements.