[Acute gastroenteritis of viral etiology].

Retrospective analysis of own experiences and investigations concerning the role of the viral etiology in acute gastroenteritis were presented. Stools of children and soldiers with acute gastroenteritis were examined by electron microscopy. The most frequent causative agents were rotaviruses and much less frequently found were other viral particles of: coronaviruses, adenoviruses, Norwalk-like viruses, astroviruses, caliciviruses and "small round viruses".

[Cytomegalovirus transmission by fresh blood].

Investigations included blood donors for extracorporeal circulation, as well as patients (12) before and after cardiopulmonary by-pass. CMV infection is a frequent consequence of multiple fresh blood transfusions in persons with aortocoronary "by-pass" in 25% operated patients. If a patient receives more than 10 transfusions of fresh blood, frequency of serologically positive reactions to CMV is found in approximately 40-60% operated patients.