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Oropouche Fever, Cuba, May 2024.

Ana Julia Benitez, Mayling Alvarez, Lissette Perez

Emerging Infectious Diseases

|September 10, 2024

Summary

This summary is machine-generated.

Oropouche fever outbreak in Cuba linked to Brazilian virus strains. Biting midges and mosquitoes carried the Oropouche virus, with no severe cases reported.

Keywords:

Cuba Oropouche virus arboviruses orthobunyavirus vector-borne infections viruses

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Area of Science:

Virology
Epidemiology
Arbovirology

Background:

Oropouche fever is an emerging arboviral disease caused by the Oropouche virus (OROV).
Recent outbreaks highlight the need for understanding OROV transmission dynamics and genetic diversity.

Purpose of the Study:

To characterize the Oropouche virus responsible for the May 2024 outbreak in Cuba.
To identify potential vectors involved in the transmission of OROV in the affected region.

Main Methods:

Phylogenetic analysis of viral RNA from outbreak samples.
Mosquito and midge pool screening for Oropouche viral RNA using molecular methods.

Main Results:

The Cuban OROV strain showed close genetic relatedness to Brazilian strains from 2023.
Oropouche viral RNA was detected in pools of Ceratopogonidae spp. (biting midges) and Culex quinquefasciatus mosquitoes.
All identified cases of Oropouche fever were non-severe.

Conclusions:

The findings suggest potential viral importation and spread from Brazil to Cuba.
Ceratopogonidae midges and Culex mosquitoes are confirmed as competent vectors for OROV in this context.
Geographic expansion of OROV may lead to increased incidence and potentially more severe disease presentations in the future.