BACKGROUND/ PURPOSE: A new molecular classification scheme has recently been adopted that groups all enteroviruses into four species, designated human enterovirus A (HEV-A) through D. In this study, we tried to demonstrate the correlation between this molecular classification scheme and clinical manifestations in patients. METHODS: We retrospectively reclassified the clinical isolates of enteroviruses from the preceding 4.5 years in our virology laboratory using reverse transcription-polymerase chain reaction, and reviewed the clinical manifestations of 138 pediatric patients. RESULTS: We reclassified 23 isolates of the five serotypes into the HEV-A group, 110 isolates of 16 sero-types into the HEV-B group, five isolates into the HEV-C group, and no isolate of the HEV-D group. HEV-A species caused significantly more hand-foot-and-mouth disease (p < 0.001), herpangina (p = 0.029), and myoclonic jerks (p < 0.001) compared with HEV-B species. However, HEV-B species caused significantly more pharyngitis (p = 0.043), respiratory tract infections (p = 0.046), nausea and vomiting (p = 0.007), and aseptic meningitis (p = 0.001). The only death in our report was caused by coxsackievirus A16, which belonged to the HEV-A group. CONCLUSION: The association between the molecular classification of enteroviruses and related disease patterns is an important finding. We suggest that this molecular classification could be applied in a clinical laboratory as an alternative method under certain circumstances, such as limited availability of antisera or questionable serotyping results, to identify the untypeable isolates.
BACKGROUND/ PURPOSE: A new molecular classification scheme has recently been adopted that groups all enteroviruses into four species, designated human enterovirus A (HEV-A) through D. In this study, we tried to demonstrate the correlation between this molecular classification scheme and clinical manifestations in patients. METHODS: We retrospectively reclassified the clinical isolates of enteroviruses from the preceding 4.5 years in our virology laboratory using reverse transcription-polymerase chain reaction, and reviewed the clinical manifestations of 138 pediatric patients. RESULTS: We reclassified 23 isolates of the five serotypes into the HEV-A group, 110 isolates of 16 sero-types into the HEV-B group, five isolates into the HEV-C group, and no isolate of the HEV-D group. HEV-A species caused significantly more hand-foot-and-mouth disease (p < 0.001), herpangina (p = 0.029), and myoclonic jerks (p < 0.001) compared with HEV-B species. However, HEV-B species caused significantly more pharyngitis (p = 0.043), respiratory tract infections (p = 0.046), nausea and vomiting (p = 0.007), and aseptic meningitis (p = 0.001). The only death in our report was caused by coxsackievirus A16, which belonged to the HEV-A group. CONCLUSION: The association between the molecular classification of enteroviruses and related disease patterns is an important finding. We suggest that this molecular classification could be applied in a clinical laboratory as an alternative method under certain circumstances, such as limited availability of antisera or questionable serotyping results, to identify the untypeable isolates.
Authors: Jose L Huaman; Gladys Carrion; Julia S Ampuero; Jorge Gomez; Victor Ocaña; Irmia Paz; Elizabeth Gomez; Edward Chavez; Favio Sarmiento; Edward Pozo; V Alberto Laguna-Torres; Eric S Halsey Journal: Virol J Date: 2014-09-22 Impact factor: 4.099