“…It is not clear whether such sporadic infections are responsible for the antibodies that are known to occur in young adults (Huebner, Rowe, Ward, Parrott, and Bell, 1954;Stovin, 1958), or whether these antibodies are mainly caused by recurrent epidemics and subclinical infections. Type 4 adenovirus is an unusual type to be encountered in childhood, as most isolations have been made in military populations.…”