title: Giardia lamblia infection in a group of students after a visit to Leningrad in March 1970.
mesh_terms: D000293:Adolescent; D000328:Adult; D003967:Diarrhea; D005243:Feces / Q000382:microbiology; D005759:Gastroenteritis / Q000209:etiology; D005872:Giardia / Q000302:isolation & purification; D005873:Giardiasis / Q000097:blood / Q000150:complications* / Q000453:epidemiology / Q000382:microbiology; D006801:Humans; D009325:Nausea; D013548:Sweden; D013997:Time Factors; D014586:USSR