Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2024 Dec 1;27(12):pyae053.
doi: 10.1093/ijnp/pyae053.

Risk of cognitive decline among patients with dengue virus infection: a systematic review

Affiliations

Risk of cognitive decline among patients with dengue virus infection: a systematic review

Lakshmi Thangavelu et al. Int J Neuropsychopharmacol. .

Abstract

Dengue fever, caused by the dengue virus and transmitted through Aedes mosquitoes, is a growing public health concern, particularly in tropical and subtropical regions. Traditionally associated with febrile and hemorrhagic symptoms, recent research suggests a potential link between dengue and cognitive impairments. This systematic review assessed existing research to understand the association between dengue virus infection and cognitive impairments, including dementia, Alzheimer disease, memory loss, and confusion. This systematic review followed preferred reporting items for systematic reviews and meta-analyses guidelines. A comprehensive literature search was conducted in PubMed, EMBASE, and Web of Science up to January 18, 2024. Studies examining the prevalence and association of cognitive impairments in dengue patients were included. Data extraction and quality assessment were performed using Nested Knowledge software and the Newcastle-Ottawa Scale. Of the 1129 articles identified, 5 were included in the review, covering a total of 200 873 participants from Taiwan, Brazil, and France. Evidence from population-based cohort studies indicated short-term cognitive impairments, including confusion and memory loss, in some dengue patients. Additionally, long-term risks of dementia, including Alzheimer disease and vascular dementia, were observed, particularly among older adults. Although the findings suggest there might be an association between dengue infection and cognitive decline, the mechanisms underlying this link remain unclear. This systematic review suggests that dengue virus infection may affect cognitive function in both acute and long-term contexts. However, the current evidence is not strong enough to establish a conclusive link. Further research with larger sample sizes and longitudinal studies is essential to confirm the impact of dengue virus on cognitive health.

Keywords: Alzheimer; cognitive impairment; dementia; dengue; systematic review.

PubMed Disclaimer

Conflict of interest statement

None declared.

Figures

Figure 1.
Figure 1.
PRISMA flow diagram representing the screening and selection process of the studies.

References

    1. Lindsey N, Lehman J, Staples J, Fischer M.. Division of vector-borne diseases. national center for emerging and zo-onotic infectious diseases, CDC west Nile virus and other arboviral diseases—United States. CDC. 2013;63:521-526. - PMC - PubMed
    1. Ilic I, Ilic M.. Global patterns of trends in incidence and mortality of dengue, 1990-2019: an analysis based on the global burden of disease study. Medicina (Kaunas). 2024;60:425. - PMC - PubMed
    1. WHO Guidelines Approved by the Guidelines Review Committee. Dengue: Guidelines for Diagnosis, Treatment, Prevention and Control: New Edition. World Health Organization; 2009. - PubMed
    1. Cam BV, Fonsmark L, Hue NB, Phuong NT, Poulsen A, Heegaard ED.. Prospective case-control study of encephalopathy in children with dengue hemorrhagic fever. Am J Trop Med Hyg. 2001;65:848-851. - PubMed
    1. Guzman MG, Gubler DJ, Izquierdo A, Martinez E, Halstead SB.. Dengue infection. Nat Rev Dis Primers. 2016;2:16055. - PubMed

Publication types