infected by an "unprecedented" number
... that marsh rice rats in Florida are infected by an "unprecedented" number of internal parasites?
... that <a href="./Marsh_rice_rat" id="mwEmQ" rel="mw:WikiLink" title="Marsh rice rat">marsh rice rats</a> in <a href="./Florida" id="mwEmU" rel="mw:WikiLink" title="Florida">Florida</a> are <b id="mwEmY"><a href="./List_of_parasites_of_the_marsh_rice_rat" id="mwEmc" rel="mw:WikiLink" title="List of parasites of the marsh rice rat">infected by an "unprecedented" number</a></b> of <a class="mw-redirect" href="./Endoparasite" id="mwEmg" rel="mw:WikiLink" title="Endoparasite">internal parasites</a>?