Question

Kala-azar and oriental sore are spread by
a. Housefly
b. Bed bug
c. Sandfly
d. Fruit fly

Answer 1

Hint: The disease kala-azar is also called as black fever and Leishmaniasis. The adult female Sandfly is well known to be a bloodsucker. It usually feeds at night on asleep prey. When an animal is bitten by an infected fly that carries L. donovani, the pathogen is consumed along with the prey's body fluid.

Complete answer:
● The protozoan parasites of the genus Leishmania are vectors that cause the disease of Leishmaniasis. The Visceral Leishmaniasis (which are also known as kala-azar) is the simplest form of Leishmaniasis.
● If there is no proper analysis and action, then it can be associated with a high rate of fatality. Sandfly bites typically spread it.
● Besides, the disease called Cutaneous Leishmaniasis (also known as oriental sore) is one of the most common forms of Leishmaniasis which affects the lives of humans.
● The bite of a sandfly spreads typically. Thus, both the diseases called Kala-azar and Oriental Sore are spread by Sandfly.
● The common housefly causes diseases like shigellosis, typhoid fever, E. coli, and cholera. We can say that the housefly can transmit the pathogens that cause these diseases.
● The triatomines, which is a type of bed bugs, is capable of transmitting the disease called Trypanosoma cruzi. We can say this bug is also a parasite that causes Chagas disease.
● According to the result given by the research made by the scientists, it concludes that fruit flies can hand over diseases like E. coli, Salmonella, and Listeria to surfaces and displace bacteria from a polluted source to renewed food which is ready to eat.

Hence, the correct answer is option (C).

Note: The skin ulcers, which are known as the oriental sore or Delhi sore, are caused by Leishmania Tropica. Sandflies spread this disease. The parasite lives typically in the endothelial cells of capillaries of the skin. This situation generally leads to cankerous wounds with elevated edges. However, they do not root out abundant aches.