A) malarial fever
B) cholera
C) typhoid fever
D) dengue fever
Correct Answer: C
Solution :
Widal test is performed reliobly for the diagnosis, of typhoid fever in endemic areas. The patients serum is tested for O and H antibodies against their antigen suspensions. The stained Salmonella antigens are the diagnostic reagents for the in vitro detection and quantitative estimation of specific antibodies present in serum by rapid slide and conventional tube agglutination tests. Dengue fever is a viral disease and spread by Aedes aegypti. Cholera is communicable bacterial disease caused by Vibrio cholerae and transmitted through contaminated food, water, drinks etc. Malarial fever is a communicable protozoan disease caused by species of Plasmodium and transmitted through female Anopheles mosquito.
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