A Complete Semantic Characterization of K-Leaf: A Logic Language with Partial Functions.

Abstract

From October 1988 to June 1989 the studies on viral infections of respiratory tract were done in specimens taken from 461 children, aged 0-2 years. Similarly to the observations in previous epidemic seasons infections due to RS and parainfluenza type 3 viruses were dominated. These studies included also influenza type C and parainfluenza type 4 viruses with unknown epidemiology in Poland. The insignificant role of these infections in small children was estimated according to the low ratio of detection in specimens tested--0.4% and 0.9% respectively.