Question

What causes chickenpox?
(a)Varicella virus
(b)Adenovirus
(c)Bacteriophage ${ T }_{ 2 }$
(d)S.V.40 virus

Answer 1

Hint: Chickenpox is a viral disease that was very common among children. The main symptom for this is the red blisters that appear everywhere on the body. VZV is the name of the vaccine used to prevent chickenpox.

Complete answer:
Chickenpox is a viral disease caused by a virus named varicella-zoster. It was a common disease before the invention of its vaccine. The virus spreads through the air when an affected person sleeps or coughs. It can also spread through direct contact with the patient.
The main symptom of chickenpox is rashes that remain for 10-20 days and normally disappear after that.

Additional Information: Here's an explanation of chickenpox; its symptoms and treatments-
-Chickenpox can occur at any age but most common at the age of 14.
-Once the person is affected and cured, the person gets immune for life. But sometimes a painful rash can also occur even after many years when the virus becomes active again.
-The symptoms of this disease are rash or blisters on the whole body, fatigue, headache, fever, runny nose, and body ache. The rashes may even appear in areas like the scalp, throat, mouth, vagina, anus, etc.
-Though children are most prone to this viral disease, it occurs in adults as well. In fact, in children it's much milder and recovers fast.
-The rashes go away after 10 to 20 days automatically. During the course of infection, some relief measures can be taken, such as keeping the body cool by applying cold water, keeping short nails so that blisters don't get infected due to scratching, wearing loose clothes, etc.
Below are the diseases caused by the other viruses mentioned in the question-
Adenovirus- It causes respiratory, nervous, and digestive infection. They are the common causes of fever, cough, diarrhea, etc.
Bacteriophage ${ T }_{ 2 }$- These are viruses that infect E. coli bacteria and produce more viral DNA and proteins in bacteria. This causes the death of the bacteria.
S.V.40 virus- This is the abbreviation of simian vacuolating virus found in humans and monkeys. These cause tumors in animals and often persist as a latent infection.
So, The correct answer is Option ‘A’.

Note: Chickenpox caused by varicella virus once used to be a very common disease. However, in 1954, Thomas Weller isolated the varicella vaccine from the vesicular fluid of chickenpox and zoster lesions in cell culture.