title: Rat ectoparasite surveys in relation to murine typhus fever in Puerto Rico.
mesh_terms: D000818:Animals; D058267:Flea Infestations; D051379:Mice; D011647:Puerto Rico; D051381:Rats; D005423:Siphonaptera; D014437:Typhus, Endemic Flea-Borne; D014438:Typhus, Epidemic Louse-Borne / Q000453:epidemiology*
keywords: FLEAS; RATS; TYPHUS/epidemiology