[Albert Jesionek tracking cytomegalovirus disease]

The first publications concerning the peculiar cellular structures that later-on became the hallmark of cytomegalic inclusion disease, originated in the early 20th century from German institutes. These early reports got into oblivion even before their significance and implications could be fully realized. The purpose of this study is to reconsider the contributions of Jesionek and other authors to the discovery of the "protozoa-like structures", based upon their publications and in accordance with the state of knowledge at that time.