Diagnosis of group A coxsackieviral infection using polymerase chain reaction

Area of Science:

• Virology
• Pediatric Infectious Diseases
• Molecular Diagnostics

Background:

• Acute febrile illness in children is a common concern during summer months.
• Enteroviral infections, including group A coxsackieviruses, are known causes of such illnesses.
• Traditional viral isolation methods like tissue culture can be challenging for certain enteroviruses.

Purpose of the Study:

• To investigate the association between enteroviral infections and acute febrile illness in children.
• To compare the efficacy of tissue culture and polymerase chain reaction (PCR) for enterovirus detection.
• To specifically assess the role of group A coxsackieviruses in pediatric febrile illness.

Main Methods:

• Throat swabs were collected from 246 children over two summer periods (1997 and 1998).
• Samples were analyzed using both conventional tissue culture and PCR techniques.
• Sequence analysis of PCR products was employed for enteroviral genotype identification.

Main Results:

• Enteroviruses were isolated from 33 samples via tissue culture; 35 other viruses were also identified.
• Enteroviral genomes were detected by PCR in an additional 54 samples where no virus was isolated.
• Sequence analysis revealed 38 distinct group A coxsackieviral genotypes among the 41 identified enteroviral genotypes.

Conclusions:

• Polymerase chain reaction (PCR) offers a valuable diagnostic tool for identifying enteroviral infections.
• PCR significantly enhances the detection and characterization of group A coxsackieviruses, which are often difficult to culture.
• The findings underscore the utility of molecular methods in diagnosing viral-induced febrile illnesses in pediatric populations.