Conclusion
In summary, COVID-19 should be considered as a differential diagnosis of acute undifferentiated febrile illness. In endemic regions, however, clinically suspected patients should be tested for both COVID-19 and Dengue fever, especially during the rainy season. This will aid in determining the burden of dengue and COVID-19 coinfection. Precise diagnosis is very crucial considering clinical presentation, exposure history and laboratory assays. During the COVID-19 pandemic, isolation of febrile ill patients’ needs to be considered to, which leads to the prevention of disease transmission. COVID-19 can show with nonspecific symptoms; therefore, it is critical that physicians are aware of this potential. As a result, instances of COVID-19 with extrapulmonary and unusual manifestations, as well as co-infections such as dengue fever, should not be overlooked when patients present to hospital settings, where healthcare professionals should be cautious. We believe that a combination of these strategies will help Bangladesh deal with the COVID-19 and dengue virus outbreaks, lowering higher mortality rates and increasing the survival rate of COVID-19 cases, which may be intensified by dengue.