Sudden infant death in an 8-month-old baby with dengue virus infection: searching for virus in postmortem tissues by immunohistochemistry and Western blotting.

Sudden infant death due to dengue virus infection is very rare. An 8-month-old male infant was found unresponsive during a nap in his nursery school. We emphasize the usefulness of dengue viral antigens as a postmortem diagnostic technique to demonstrate the presence of virus in human tissue specimens by immunohistochemistry and Western blotting.