Introduction
COVID-19 infection is caused by the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) virus, which has already propagated to over 210 nations and territories throughout the worldwide. The World Health Organization (WHO) has declared it a pandemic emergency due to the rise of COVID-19 cases in March 2020. COVID-19 was confirmed for the first time in Bangladesh on March 8, 2020 (1). Till date, globally 190 million cases along with over 4 million deaths have been recorded due to COVID-19. COVID-19 infection can have a wide range of symptoms, from mild to severe acute respiratory syndrome requiring respiratory support (2). Hemoptysis is prevalent in about up to 13 percent of pulmonary embolism patients and seldom seen among COVID-19 patients (3). Aside from the continuing pandemic, dengue is predominant for the last decades and caused high morbidity and mortality. Bangladesh has been hit by dengue fever every year, and COVID-19 pandemic started in Bangladesh from March, 2020 (4). Dengue fever is a viral infection caused by four kinds of Flaviviridae viruses (DENV-1, DENV-2, DENV-3, and DENV-4). Infected Aedes aegypti and Aedes albopictus female mosquitoes are the most common carriers of these viruses(5). However, dengue and COVID-19 might be a hazardous combination. According to clinician observation, many cases have been detected in different hospitals in Bangladesh. In this report, we have presented a case of COVID-19 and dengue co-infection in a person in Bangladesh, where the patient presented hemoptysis as first presentation.