Question

AIDS, mumps, measles, chicken pox, polio, influenza and rabies are caused by
A. Fungi
B. Bacteria
C. Viruses
D. Protozoa

Answer 1

Hint: Health is disrupted by a disease. The disease is a condition of the body or body parts in which functions are disrupted or deranged. It is the disorder of the mind or the body and disturbs its normal physiology and function.

Complete answer: Pathogens are organisms capable of causing diseases. These include biological agents like bacteria, fungi, viruses, mycoplasma, protozoans, helminths, etc.
AIDS- Acquired immune deficiency syndrome is caused by the HIV (human immunodeficiency virus). This disorder breaks down the immune system of the body and it is a fatal disease.
Mumps- It is an infectious disease that causes fever, difficulty in opening of mouth due to swelling of the parotid glands. It is caused by Paramyxovirus. The disease spreads through the saliva of the infected person.
Measles- It is also called Rubeola disease and is characterized by fever, inflammation of the air passages and a rash all over the body. It is caused by the Rubeola virus which is passed out in the secretions of the nose and throat of the infected persons as droplets or in articles soiled by these secretions.
Chicken pox- The pathogen of this disease is Varicella zoster. It is a mild but highly infectious disease characterized by fever and rashes over the body.
Polio- This disease was also called infantile paralysis and it is caused by poliovirus. The disease spreads mainly through intestinal discharge.
Influenza- It is commonly called flu and is highly infectious. It is caused by influenza viruses and it starts with headache, sore throat, cold, fever, etc.
Rabies- It is caused by the Rabies virus which is introduced in the body by the bite of mad dogs, jackals, wolves, cats, etc. It is a fatal disease and is characterized by the fear of water of the infected person.
So all of these diseases are caused by viruses.
So, the correct answer is “Option C”.

Note: Vaccination is the best prevention against a disease. Vaccination is based on the principle of memory cells of our body. In vaccination, a weakened or killed pathogen is injected in the body which initiates an immune response and forms memory cells. These memory cells help in preventing the disease