Virological examination of water of the Baltic Sea in the neighbourhood of a sewage outfall was done. By means of an apparatus for concentrating viruses in water, it was possible to detect enteroviruses in four of eleven samples, and in general in those moments, when conditions were fulfilled by a certain windway. The amount of viruses varied from 5 to 126 pfu in 10 liters, the ratio of virus to E. coli titer from 1:11 111 to 1:100 000. Factors influencing the decrease of virus titer in seawater were briefly discussed.
Enterovirus Escherichia coli