CD40LG and dengue disease: During the 2016–2019 time period, the key topics included dengue fever, mathematical model, climate change, knowledge, dengue virus, prediction, IgM, mosquitoes, stability, vector-borne disease, dengue infection, rainfall, dengue fever model, machine learning, knowledge, data mining, COVID-19, ultrasound, dengue fever model, forecasting, GIS, and maculopathy.