Uncovering the Burden of Dengue in Africa: Considerations on Magnitude, Misdiagnosis, and Ancestry

• Published in: Viruses Vol. 14; no. 2; p. 233
• Main Authors: Gainor, Emily Mary, Harris, Eva, LaBeaud, A Desiree
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 25.01.2022; MDPI
• Subjects: Aedes; Africa; Africa - epidemiology; Black People; climate change; Coinfection; dengue; Dengue - diagnosis; Dengue - epidemiology; Dengue - genetics; Dengue fever; Dengue hemorrhagic fever; Diagnostic Errors; Disease Outbreaks; Endemic Diseases; Epidemiology; Humans; Infectious diseases; Malaria; Malaria - diagnosis; Mosquitoes; outbreaks; Population studies; Public health; Review; Risk Factors; Severe Dengue - epidemiology; Severe Dengue - genetics; Severe Dengue - prevention & control; Socioeconomic factors; Vectors; Zika virus; Africa; Angola; mosquitoes; epidemiology; ancestry; Africa; outbreaks; Aedes; coinfection; dengue; misdiagnosis; climate change
• ISSN: 1999-4915; 1999-4915
• DOI: 10.3390/v14020233

Dengue is a re-emerging neglected disease of major public health importance. This review highlights important considerations for dengue disease in Africa, including epidemiology and underestimation of disease burden in African countries, issues with malaria misdiagnosis and co-infections, and potential evidence of genetic protection from severe dengue disease in populations of African descent. The findings indicate that dengue virus prevalence in African countries and populations may be more widespread than reported data suggests, and that the mosquito vectors appear to be increasing in dissemination and number. Changes in climate, population, and plastic pollution are expected to worsen the dengue situation in Africa. Dengue misdiagnosis is also a problem in Africa, especially due to the typical non-specific clinical presentation of dengue leading to misdiagnosis as malaria. Finally, research suggests that a protective genetic component against severe dengue exists in African descent populations, but further studies should be conducted to strengthen this association in various populations, taking into consideration socioeconomic factors that may contribute to these findings. The main takeaway is that Africa should not be overlooked when it comes to dengue, and more attention and resources should be devoted to this disease in Africa.