[The behaviour of platelets in some viral infectious diseases in childhood (author's transl)].

To evidentiate a participation clinically not evident of thrombocytes during viral infections, the Authors performed platelets count in 207 children of age varying 7 months to 12 years from the diagnosis and during the course of the illness. A subclinical thrombocytopenia was revealed in 55% of children affected by measles, in 25% of mumps, in 45% of varicella, in 30% of german measles and in 55% of infectious mononucleosis. In all the cases we didn't observe hemorrhagic manifestations and platelets count has come back to normal and higher levels spontaneously. Previously the Authors discuss pathogenetic ways which may have a role in subclinically thrombocytopenia during viral infectious diseases.