Simultaneous and rapid detection method for measles and rubella using single-tube multiplex real-time quantitative...

Area of Science:

• Virology
• Molecular Diagnostics
• Infectious Diseases

Background:

• Measles and rubella infections present with similar symptoms like fever and rash, complicating clinical diagnosis.
• Accurate and rapid differentiation is crucial for effective outbreak control and public health management.

Purpose of the Study:

• To develop and validate a single-tube multiplex real-time PCR assay for the simultaneous detection and differentiation of measles and rubella viruses.
• To provide a rapid diagnostic tool to aid in the early identification of these viral infections.

Main Methods:

• A single-tube multiplex real-time PCR assay was designed using established primer sets with a modified reporter dye.
• The assay was optimized and validated on the cobas z480 platform (Roche Molecular Systems, Inc.).
• Sensitivity was assessed by detecting low copy numbers of viral targets.

Main Results:

• The developed assay demonstrated high sensitivity, detecting as few as 10 copies/10 μl for both measles and rubella.
• The assay showed good reproducibility with coefficients of variation of 11.2% for measles and 21.8% for rubella.
• Key strengths include operational simplicity, a short turnaround time of 2 hours, and the inclusion of an internal control for run validation.

Conclusions:

• The single-tube multiplex real-time PCR assay provides a sensitive, rapid, and efficient method for diagnosing measles and rubella.
• This diagnostic tool can facilitate early case identification, enabling timely infection control measures and contributing to the prevention of widespread outbreaks.
• The assay holds significant potential for managing current measles and rubella outbreaks in Japan and globally.