Outbreak of Marburg Virus Disease, Equatorial Guinea, 2023

Outbreak of Marburg Virus Disease, Equatorial Guinea, 2023

In February 2023, the government of Equatorial Guinea declared an outbreak of Marburg virus disease. We describe the response structure and epidemiologic characteristics, including case-patient demographics, clinical manifestations, risk factors, and the serial interval and timing of symptom onset,...

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Main Authors: Stephanie Ngai, Egmond Samir Evers, Angela Katherine Lao Seoane, George Ameh, Julienne N. Anoko, Céline Barnadas, Mary J. Choi, Janet Diaz, Luca Fontana, Pierre Formenty, Ingrid Hammermeister Nezu, Frédérique Jacquerioz, John Klena, Henry Laurenson-Schafer, Olivier le Polain de Waroux, Anaïs Legand, Raquel Medialdea Carrera, Tatiana Metcalf, Joel Montgomery, Silvia Morreale, María E. Negrón, Justino Obama Nvé, Mitoha Ondo’o Ayekaba, Boris I. Pavlin, Trevor Shoemaker, Yaimara Torres Hernandez, Mabel Varona Venta, Emily Z. Gutierrez, Florentino Abaga Ondo Ndoho
Format: Article
Language:English
Published: Centers for Disease Control and Prevention 2025-05-01
Series:Emerging Infectious Diseases
Subjects:
Marburg virus
viruses
zoonoses
Marburg virus disease
filoviruses
viral hemorrhagic fever
Online Access:https://wwwnc.cdc.gov/eid/article/31/5/24-1749_article
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Summary:In February 2023, the government of Equatorial Guinea declared an outbreak of Marburg virus disease. We describe the response structure and epidemiologic characteristics, including case-patient demographics, clinical manifestations, risk factors, and the serial interval and timing of symptom onset, treatment seeking, and recovery or death. We identified 16 laboratory-confirmed and 23 probable cases of Marburg virus disease in 5 districts and noted several unlinked chains of transmission and a case-fatality ratio of 90% (35/39 cases). Transmission was concentrated in family clusters and healthcare settings. The median serial interval was 18.5 days; most transmission occurred during late-stage disease. Rapid isolation of symptomatic case-patients is critical in preventing transmission and improving patient outcomes; community engagement and surveillance strengthening should be prioritized in emerging outbreaks. Further analysis of this outbreak and a One Health surveillance approach can help prevent and prepare for future potential spillover events.
ISSN:1080-6040
1080-6059

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