Abnormal liver function in children hospitalized with acute respiratory infection of adenoviruses: a retrospective study

Human adenoviruses (HAdVs) can cause acute hepatitis in immunocompromised patients. However, it is unclear whether HAdVs are contributors to hepatitis in immunocompetent children. In this study, the liver function test (LFT) results were retrospectively analyzed among children hospitalized (age <14 years) between January 2016 and October 2019 for acute respiratory infection caused by adenoviruses. Alanine transaminase (ALT) and aspartate aminotransferase (AST) levels were elevated in 7.74% and 46.89% of patients, respectively. All patients with >2 folds of the upper limit of ALT or AST levels were infected with HAdV-7 or HAdV-55. Significantly higher levels of ALT, AST, gamma-glutamyl transpeptidase (gamma-GT), and lower albumin levels were observed in the HAdV-7 infection group than in the HAdV-3 infection group. HAdV-55 infection led to significantly higher gamma-GT, total bilirubin, and direct bilirubin levels than the other infection types. The records of four patients with serial monitoring of the LFT results were further analyzed. Multiple indicators remained abnormal during the entire hospitalization in these patients. These results indicate that HAdV infection is often accompanied by abnormal liver function, and HAdV-7 and HAdV-55 might be under-recognized contributors to hepatitis among children.