Investigation of five cases of vesicular enteroviral stomatitis with exanthema induced by coxsackie A5 virus.

Five cases of vesicular enteroviral stomatitis with exanthema or hand-foot-mouth disease are described. The diagnosis was based on the clinical aspect, the Coxsackie A5 virus isolation from pathological samples, and confirmed by serological tests.

[The use of cell cultures in the cytotoxicity testing of dental materials].

On lines of human (HeLa) and monkey (BS-C-1) cell cultures, the cytotoxicity of 15 products of dental use for radicular and coronary fillings, alloys and endodontic antiseptics was analysed. It was found that the simplified method can be used, together with the in vivo and in vitro tests recommended by I.S.

[The presence of enterovirus in species of shellfish and fish].

Enteroviruses were isolated from 12% of the digestive tract samples collected from Anodonta cygnea (9.4%) and Dreysena polymorpha (13.2%) shell species and from 8.

[Virologic research on the quality of 2 sources of drinking water from zone "I"].

Enteroviruses were isolated from 4.6% out of the examined tap water samples. No relation could be established between viral pollution and classic quality indexes of water.

In vivo and in vitro cytogenetic damage induced by sodium nitrite.

The mutagenicity of sodium nitrite was assayed by in vivo and in vitro experiments. The in vivo experiments were carried out in male rats and mice intragastrically treated twice, with an interval of 24 h, with nitrite in doses of 1.72, 5.