Arenaviruses other than Lassa virus

Area of Science:

• Virology
• Public Health
• Biosecurity

Background:

• The Arenaviridae family comprises 23 viral species, with five known to cause severe viral hemorrhagic fevers (VHFs).
• These five VHF-causing arenaviruses (Junin, Machupo, Guanarito, Sabia, and Lassa virus) necessitate Biosafety Level 4 (BSL-4) containment.
• They are classified as Category A pathogens by the CDC due to their high potential for public health impact and mass casualties.

Purpose of the Study:

• To summarize the current understanding of arenaviruses with hemorrhagic fever potential.
• To provide insights into the anticipated effects of arenavirus-related public health emergencies.
• To highlight the critical need for advanced research into diagnostic, preventive, and therapeutic countermeasures against potential arenavirus misuse.

Main Methods:

• Literature review and synthesis of existing data on arenaviruses.
• Analysis of the public health implications and biosecurity risks associated with Category A pathogens.
• Identification of research gaps in arenavirus countermeasures.

Main Results:

• Five arenaviruses pose significant hemorrhagic fever risks with high fatality rates.
• These viruses are recognized as potential bioweapons due to their severity and containment requirements.
• Current countermeasures are insufficient to address the threat of weaponized arenaviruses.

Conclusions:

• Urgent development of diagnostic, preventive, and therapeutic tools is essential.
• Fundamental research is required to create effective countermeasures against naturally occurring and engineered arenaviruses.
• Enhanced biosecurity and public health preparedness are vital to mitigate arenavirus threats.