Adenovirus gastroenteritis in Hungary, 2003-2006

Area of Science:

• Virology
• Epidemiology
• Pediatrics

Background:

• Enteric human adenoviruses (HAds) are a significant cause of childhood gastroenteritis globally.
• Accurate diagnosis and surveillance are crucial for understanding HAd epidemiology and disease burden.

Purpose of the Study:

• To investigate the incidence and type distribution of enteric HAds in diarrheic children in south-western Hungary between 2003 and 2006.
• To assess the impact of diagnostic methods on HAd detection rates.

Main Methods:

• Laboratory analysis of diarrheic samples using antigen detection tests (latex agglutination, immunochromatography).
• Molecular techniques including polymerase chain reaction (PCR), single-strand conformation polymorphism, and hexon gene sequencing.
• Phylogenetic analysis to determine HAd types.

Main Results:

• The overall HAd infection rate was 8.1%, decreasing from 11.7% in 2003 to 5.7% in 2006.
• Human adenovirus 40 (HAd40) was detected only in 2003-2004, while HAd41 was detected throughout the study period.
• Higher detection rates of non-enteric HAds were observed in the first half of the study when latex agglutination was the primary detection method.

Conclusions:

• The choice of diagnostic method can significantly influence the observed epidemiology and disease burden of enteric HAd infections.
• Continued surveillance using standardized molecular methods is essential for accurate HAd characterization.