Mosquito can be a vector for following diseases except

Mosquitoes are primary vectors for several major diseases. Yellow fever is an acute viral hemorrhagic disease transmitted by the Aedes aegypti mosquito [t1][t2]. Dengue fever, also known as 'break-bone fever', is similarly transmitted by Aedes aegypti and Aedes albopictus [c2][t6]. Filaria (lymphatic filariasis) is a parasitic disease transmitted through the bites of various mosquitoes, including the Culex, Anopheles, and Aedes genera [t1][t3][t4]. In contrast, Kala-azar (visceral leishmaniasis) is not transmitted by mosquitoes; its vector is the sandfly [t1][t4][t5]. While mosquitoes, ticks, and fleas are all blood-sucking arthropods that serve as disease carriers, the specific biological relationship between the Leishmania parasite and the sandfly distinguishes Kala-azar from mosquito-borne illnesses [t1][t5]. Therefore, among the given options, Kala-azar is the only disease for which the mosquito is not a vector.

Sources

1. [1] https://extranet.who.int/kobe_centre/sites/default/files/pdf/vbdfactsheet.pdf
2. [2] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 8: Natural Hazards and Disaster Management > Dengue and Chikungunya > p. 79
3. [3] https://www.cdc.gov/global-health/impact/fighting-the-worlds-deadliest-animal.html
4. [4] https://www.sciencedirect.com/topics/medicine-and-dentistry/disease-carrier