Dengue Fever Global Summary
As of November 20 of this year, a total of 52,807 laboratory-confirmed dengue cases and 230 associated deaths have been reported in Bangladesh this year, with a case fatality rate of 0.44%. Although dengue is a common endemic disease in Bangladesh, a surge in cases since June 2022 remains unusual. Several studies suggest that this year's high incidence of dengue cases is occurring against a backdrop of unusual rainfall since June 2022, accompanied by high temperatures and high humidity, leading to an increase in mosquito populations across Bangladesh. Dengue fever is an acute systemic infectious disease caused by the bite of a female mosquito carrying the Dengue virus (DENV)[1]. Dengue fever infects approximately 390 million people annually and affecting more than 120 countries, most severely in Africa, the Americas, Southeast Asia and the Western Pacific [2]. The spread of Dengue fever is now spreading to temperate and cold zones and higher altitudes as global warming increases, and the prevalence of serotypes is changing. Dengue fever has become a significant public health problem, and the increasing geographical spread of the virus, the number of cases and the severity of the disease pose a global threat to human health and socioeconomics [3]. 1. Serotype 2. Vectors DENV is transmitted by two mosquito vectors, Aedes aegypti and Aedes albopictus [8]. DENV can be transmitted vertically. Aedes aegypti and Aedes albopictus prefer temperate climates. Domestic water storage and decorative plant containers, waste food and drink containers, drains, and buildings under construction are preferred sites for Aedes aegypti and Aedes albopictus to live and breed. One of the current measures to contain DF is to control the DENV vector by eliminating or managing the larval environment and using biological agents and insecticides to kill the larvae [9]. 3. Global Epidemiology Resource:Healthdirect Dengue fever is endemic in many countries in Southeast and South Asia, with incidences occurring throughout the year and showing clear seasonal peaks. Since June 2022, Pakistan has been hit by massive floods. The floods provided a habitat for mosquitoes to breed, and the aftermath made mosquito-borne infections susceptible to outbreaks or epidemics. September saw a surge in Dengue cases in Pakistan, with 19,190 new cases, accounting for 74% of the annual total. Throughout 2022, the cumulative number of Dengue cases in Pakistan has significantly exceeded the level of the same period in the previous four years [10]. The risk of further spread in Pakistan is high due to heavy rains and flooding, which have damaged many health facilities and displaced 7.9 million people. In Nepal, the number of Dengue cases has risen since the onset of the rainy season in July, with 23 156 new cases in September, accounting for 84% of the annual total. In Bangladesh, the Ministry of Health and Family Welfare ...