Question

Which of the following is a causative agent of the disease kala-azar?
(a)Leishmania
(b)The disease is genetic in origin
(c)Salmonella typhi
(d)Wuchereria bancrofti

Answer 1

Hint: Kala-azar is a disorder in which a parasite migrates to internal organs such as the liver, spleen, and bone marrow. It will almost always result in the host's death if left untreated.

Complete answer:
Kala-azar is a common Leishmania donovani-induced disease. Phlebotomus argentipes transmits the disease. This is one of the species of sand flies that are involved in the spread of this illness. These act as the host and vector intermediates that transmit the disease. For the eggs to develop, the fly requires blood. When they suck blood from the infected human, they get infected. The protozoan grows in the fly's body and is transmitted when the fly feeds on a healthy person's blood.

Additional Information: Wuchereria bancrofti is the main cause of lymphatic filariasis and is a human parasitic worm. Together with Brugia malayi and B, it is one of the three parasitic worms. Timori, which can induce lymphatic filariasis by infecting the lymphatic system. A number of mosquito vector species are transmitted by these filarial worms.
Salmonella Typhi (S. Typhi) is a bacteria that infects the blood and the intestinal tract. The condition is known as typhoid fever. S. A related but milder illness is caused by Paratyphi bacteria, which falls under the same word. Caused diseases or conditions: Typhoid fever.
So, the correct answer is ‘Leishmania’.

Note: Leishmaniasis is a disease that is caused by Leishmania type parasites. It is transmitted by the bite of sandflies of some kinds. There are three primary ways of contracting the disease: cutaneous, mucocutaneous, or visceral. Intravenous liposomal amphotericin B (L-AmB) for VL and oral miltefosine for CL, ML, and VL caused by unique species are the only Food and Drug Administration (FDA)-approved drugs for the treatment of leishmaniasis.