title: Letter: Cholera.
mesh_terms: D000126:Achlorhydria / Q000150:complications; D000367:Age Factors; D000818:Animals; D002415:Cats; D002771:Cholera / Q000453:epidemiology*; D004196:Disease Outbreaks / Q000453:epidemiology; D005743:Gastrectomy; D006801:Humans; D007558:Italy; D011174:Portugal; D014195:Travel