CD40LG and dengue disease: However, on Day 6, decrease in platelets was observed along with abnormal blood parameters, leading to the follow‐up tests for dengue IgG/IgM and S. typhi IgG/IgM as well as several tests for tropical fever panel (scrub typhus IgG/IgM, Leptospira IgG/IgM, tests for total Brucella Ab, K‐39 total Ab test for Leishmaniosis, and smear for the malarial parasite).