Question

A communicable disease, which if not controlled immediately is 100% fatal is ____
A. Syphilis
B. Kala-azar
C. Filariasis
D. Hydrophobia

Answer 1

Communicable disease is also known as a contagious disease that can be passed between people or animals. These diseases are transmitted via air, water, blood, and through contact between people or animals.

Step by step answer: Syphilis is a sexually transmitted disease that is highly contagious. It can spread through oral or anal sex. This disease is not easily detected and thus the sexual partner does not know that he is spreading this disease to the other person. This disease is caused by the bacteria Treponema pallidum. It can also spread through cuts, wounds, blood contact. The first sign is a sore, redness, and inflammation on the sexual organs and includes symptoms of headaches, fever, fatigue, hair loss, aching joints.
-Kala-azar is also known as Visceral leishmaniasis and without proper diagnosis and treatment, it is associated with high fatality. It is a disease caused by a protozoa parasite, Leishmania. The parasite when comes in contact with the healthy body migrates to internal organs such as the liver, spleen, and bone marrow that results in the death of the host. Symptoms include high fever, weight loss, fatigue, and anemia.
-Filariasis is a parasitic disease caused by roundworms. They are spread through blood-sucking insects such as mosquitoes and flies. Lymphatic filariasis occupies the lymphatic system that leads to elephantiasis in chronic cases. Subcutaneous filariasis occupies subcutaneous tissues that are present beneath the skin.
-Hydrophobia is also known as the rabies is a very fatal viral disease that causes inflammation of the brain in humans and other mammals. Early symptoms include fever and tingling sensations at the site of the disease. This disease is transmitted from animals to humans by animal bites such as a dog bite, a bat bite. If it is not controlled immediately, a 100% fatality rate is associated with infection.
Hence, the correct option is D. Hydrophobia

Note: An another deadly communicable disease is Acquired Immunodeficiency Syndrome(AIDS) caused by Human Immunodeficiency Virus (HIV). This is a sexually transmitted disease that is transmitted through contact with infected blood, semen, or vaginal fluids.