Simultaneous seeding and infecting of shell vials for rapid detection of cytomegalovirus infection

Area of Science:

• Virology
• Cell Biology
• Diagnostic Microbiology

Background:

• Cytomegalovirus (CMV) is a common human pathogen.
• Accurate and sensitive detection of CMV infection is crucial for patient management.
• Shell vial culture is a common method for viral detection.

Purpose of the Study:

• To compare the diagnostic sensitivity of two shell vial culture methods for cytomegalovirus detection.
• To determine the optimal method for enhancing CMV detection rates in cell cultures.

Main Methods:

• Fifty clinical isolates of cytomegalovirus were used.
• Infection of MRC-5 cell monolayers in shell vials.
• Infection of shell vials seeded with MRC-5 cells at the time of inoculation.
• Detection of viral isolates using immunofluorescence assays.

Main Results:

• All 50 CMV isolates (100%) were detected in shell vials with preformed confluent monolayers.
• Only 39 out of 50 CMV isolates (78%) were detected in shell vials seeded and inoculated simultaneously.
• A statistically significant difference (P < 0.001) was observed between the two methods.

Conclusions:

• Preformed MRC-5 cell monolayers in shell vials represent the most sensitive system for cytomegalovirus detection.
• This optimized method enhances the diagnostic yield for CMV infections.
• The findings support the routine use of preformed monolayers for improved CMV diagnostics.