title: The seasonal variation of infestation rate with Xenopsylla cheopis among R. norvegicus in Qaluobiya Governorate (Egypt).
mesh_terms: D000818:Animals; D004478:Ectoparasitic Infestations / Q000453:epidemiology / Q000662:veterinary*; D004534:Egypt; D051381:Rats / Q000469:parasitology*; D012376:Rodent Diseases / Q000453:epidemiology*; D012621:Seasons; D005423:Siphonaptera