Rapid detection of important human pathogenic Phleboviruses

Area of Science:

• Virology
• Molecular Biology
• Public Health

Background:

• Phleboviruses are significant human pathogens within the Bunyaviridae family.
• Current diagnostic tools for many phleboviruses are limited, hindering effective surveillance and control.
• Rapid and accurate detection methods are crucial for managing outbreaks caused by these viruses.

Purpose of the Study:

• To develop and evaluate novel reverse transcription-polymerase chain reaction (RT-PCR) assays.
• The assays target four key human pathogenic phleboviruses: Sandfly Fever Sicilian virus (SFSV), Sandfly Fever Naples virus (SFNV), Toscana virus (TOSV), and Rift Valley Fever virus (RVFV).

Main Methods:

• Generation of specific RNA standards for assay calibration and validation.
• Performance testing of the developed RT-PCR assays using these RNA standards.
• Evaluation of assay sensitivity and detection limits.

Main Results:

• RT-PCR assays demonstrated high sensitivity, with detection limits of 10-100 RNA molecules for SFSV, TOSV, and RVFV.
• The TOSV assay successfully identified recent viral isolates from Spain.
• The RVFV assay detected recent isolates originating from Africa.

Conclusions:

• The developed RT-PCR assays provide sensitive and specific tools for phlebovirus detection.
• These assays are expected to significantly enhance the surveillance of pathogenic phleboviruses.
• Improved diagnostics will aid in the timely identification and management of phlebovirus infections.