21. CSF testing to date has been negative for West Nile virus and enteroviruses , including poliovirus. 22. Preliminary tests indicated the boy died from severe complications of an intestinal virus known as enterovirus 71. 23. Enteroviruses are stable under acid conditions and thus they are able to survive exposure to gastric acid.24. Enteroviruses were isolated from a total of 1, 892 patients in this laboratory during this period.25. Nasopharyngeal specimens were positive for rhinovirus / enterovirus in six out of eight patients that were tested. 26. However, other enteroviruses , which cause symptoms from stomach upsets to fever and nausea, were present. 27. A rare condition with a similar presentation, nonpoliovirus poliomyelitis, may result from infections with nonpoliovirus enteroviruses . 28. Sinovac is developing vaccines for enterovirus 71, universal pandemic influenza, Japanese encephalitis, and human rabies. 29. Most enterovirus that hit Taiwan during the summer are relatively benign, and deaths are unusual, Huang said. 30. The Department of Health says it is continuing to monitor the intestinal " enterovirus type 71 ".
