The detection of parvoviruses

Area of Science:

• Virology
• Immunology
• Molecular Diagnostics

Background:

• Parvovirus B19 (a single-stranded DNA virus) is an Erythrovirus causing severe disease in immunocompromised individuals and fetal loss in pregnant women.
• Related genotypes (LaLi/A6 and V9) are immunologically similar to Parvovirus B19.
• Existing detection systems for Parvovirus B19 include serological and nucleic acid tests (NAT), with some NAT systems being genotype-specific.

Purpose of the Study:

• To review the current status of detection systems for Parvovirus B19 and related human parvoviruses.
• To emphasize Erythrovirus detection using serological, NAT, and immunological approaches.
• To highlight the importance of assay standardization and performance consistency.

Main Methods:

• Review of commercially available serological and nucleic acid test (NAT) systems.
• Description of immunological assays (B-cell ELISpot, T-cell stimulation, cytokine detection).
• Explanation of immunohistochemical techniques and antigen detection methods (ELISA).
• Discussion of NAT systems for newly identified parvoviruses (HBoV, PARV4, PARV5).

Main Results:

• International standard preparations for Parvovirus B19 IgG and DNA are available for assay standardization.
• Various methods exist for detecting Parvovirus B19 infection, including serology, NAT, and immunological assays.
• Detection systems are also being developed for other human parvoviruses, though clinical disease confirmation is needed.

Conclusions:

• Accurate and standardized detection methods are crucial for managing Parvovirus B19 infections and related parvoviruses.
• A combination of serological, NAT, and immunological approaches provides comprehensive diagnostic capabilities.
• Continued development and validation of detection systems are necessary for emerging parvoviruses.