Rift Valley Fever: Important Considerations for Risk Mitigation and Future Outbreaks

Area of Science:

• Virology
• Epidemiology
• Public Health

Background:

• Rift Valley fever virus (RVFV) is a zoonotic phlebovirus with pandemic potential, capable of causing severe disease in humans and livestock.
• RVFV outbreaks are sporadic and can range from localized events to multi-country epidemics, impacting previously unaffected regions.
• The full impact of Rift Valley fever (RVF) is underestimated due to underreporting, misdiagnosis, and limited laboratory confirmation capabilities.

Purpose of the Study:

• To highlight the significant public health threat posed by Rift Valley fever virus (RVFV).
• To underscore the challenges in defining the true burden of Rift Valley fever (RVF).
• To emphasize the need for increased awareness and risk mitigation strategies for RVFV exposure.

Main Methods:

• This study is a review and synthesis of existing knowledge on RVFV epidemiology and clinical presentation.
• Analysis of outbreak patterns, disease manifestations, and public health implications.
• Assessment of current diagnostic and vaccination limitations.

Main Results:

• RVFV can cause severe symptoms including hemorrhagic fever, vision loss, neurological impairment, and organ failure.
• Underreporting, misdiagnosis, and limited diagnostic access obscure the true incidence and burden of RVF.
• There are no approved human vaccines for RVFV, and animal vaccination is not universally applied.

Conclusions:

• Rift Valley fever virus (RVFV) represents a substantial threat due to its pathogenicity and potential for emergence.
• Effective disease control is hampered by diagnostic limitations and the absence of human vaccines.
• Travelers and residents in endemic areas must adopt risk-minimizing behaviors to prevent exposure to RVFV.