[Disease Caused by Filoviruses: An Update]
Rafael Marx de Andrade1, Andreia Paulos2, Emília Valadas3
1Faculdade de Medicina. Universidade de Lisboa. Lisboa. Portugal.
Abstract:
The Marburg and Ebola viruses belong to the Filoviridae family and are known to cause emerging zoonotic diseases. These viruses have a high case fatality rate and are easily transmissible from person to person, which makes them capable of triggering outbreaks, including in non-endemic regions, and are also considered agents of bioterrorism. Fruit bats are the natural reservoirs of these filoviruses. Transmission to humans occurs through direct contact with bodily fluids or tissues from infected animals or humans. The most severe form of filovirus disease manifests as mucocutaneous hemorrhage, often accompanied by multiorgan failure, which is the main cause of death. Traditionally, these diseases are classified in the group of viral hemorrhagic fevers, although this term is being abandoned, as there are not always hemorrhagic manifestations or fever in the patient's clinical history. Currently, no specific antiviral treatment for filovirus disease exists, and the therapeutic approach consists of supportive measures. However, for the Zaire Ebola virus (EBOV), monoclonal antibodies have already been licensed for treatment and post-exposure prophylaxis, in addition to three vaccines available. Due to the public health importance and the possibility of cases outside Africa, this review aims to improve clinical knowledge and the approach to suspected cases of FD. Improved surveillance and preparedness for potential global outbreaks are essential measures to effectively respond to these public health threats and to ensure that healthcare professionals are well-informed and prepared to deal with these diseases.
Insights
Marburg and Ebola viruses (Filoviridae family) cause severe, transmissible zoonotic diseases. This review enhances clinical knowledge for suspected filovirus disease (FD) cases, improving global outbreak preparedness.
Area of Science:
- Virology
- Zoonotic Diseases
- Public Health
Context:
- Marburg and Ebola viruses (Filoviridae family) are emerging zoonotic pathogens.
- High case fatality rates and transmissibility pose significant public health risks, including bioterrorism threats.
- Natural reservoirs include fruit bats, with transmission via direct contact with infected bodily fluids.
Purpose:
- To improve clinical knowledge and management strategies for suspected filovirus disease (FD).
- To enhance preparedness for potential global outbreaks of FD.
- To inform healthcare professionals on effective responses to filovirus threats.
Summary:
- Filovirus disease (FD) presents severe symptoms like mucocutaneous hemorrhage and multiorgan failure.
- Current treatment relies on supportive care, though specific therapies like monoclonal antibodies and vaccines exist for Zaire Ebola virus (EBOV).
- The term 'viral hemorrhagic fever' is being reconsidered due to variable clinical manifestations.
Impact:
- Enhanced surveillance and preparedness are crucial for effective global response to filovirus outbreaks.
- Improved clinical understanding will aid healthcare professionals in managing FD cases, even in non-endemic regions.
- Proactive measures are essential to mitigate the impact of these high-consequence pathogens.
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