CD40LG and dengue disease: The diagnosis of acute dengue in IgG-positive cases was possible based on NS1 antigen detection in combination with PCR positivity in 57/150 cases (38.0%), NS1 positivity and IgM seroconversion in 58/150 (38.7%), NS1 alone in 6/150 (4.0%), and IgM seroconversion alone in 29/150 (19.3%).