Joseph L. Melnick
... that epidemiologist Joseph L. Melnick found that polio chiefly spread through fecal contamination, usually by soiled hands, and that the poliovirus could survive for extended periods in sewage?
... that <a href="./Epidemiology" id="mwGP4" rel="mw:WikiLink" title="Epidemiology">epidemiologist</a> <b id="mwGP8"><a href="./Joseph_L._Melnick" id="mwGQA" rel="mw:WikiLink" title="Joseph L. Melnick">Joseph L. Melnick</a></b> found that <a class="mw-redirect" href="./Poliomyelitis" id="mwGQE" rel="mw:WikiLink" title="Poliomyelitis">polio</a> chiefly spread through fecal contamination, usually by soiled hands, and that the <a href="./Poliovirus" id="mwGQI" rel="mw:WikiLink" title="Poliovirus">poliovirus</a> could survive for extended periods in <a href="./Sewage" id="mwGQM" rel="mw:WikiLink" title="Sewage">sewage</a>?