human herpesvirus 7
... that 95% of adults have been infected by human herpesvirus 7, a virus that can cause influenza-like illness and seizures but normally causes no symptoms?
... that 95% of adults have been <a href="./Infection" id="mwBqo" rel="mw:WikiLink" title="Infection">infected</a> by <b id="mwBqs"><a class="mw-redirect" href="./Human_herpesvirus_7" id="mwBqw" rel="mw:WikiLink" title="Human herpesvirus 7">human herpesvirus 7</a></b>, a virus that can cause <a href="./Influenza-like_illness" id="mwBq0" rel="mw:WikiLink" title="Influenza-like illness">influenza-like illness</a> and <a href="./Febrile_seizure" id="mwBq4" rel="mw:WikiLink" title="Febrile seizure">seizures</a> but normally causes no <a class="mw-redirect" href="./Symptom" id="mwBq8" rel="mw:WikiLink" title="Symptom">symptoms</a>?