title: Problems in haemagglutination test with faecal viruses.
mesh_terms: D000818:Animals; D004770:Enterovirus / Q000302:isolation & purification*; D005243:Feces / Q000382:microbiology*; D000882:Haplorhini; D006385:Hemagglutination Inhibition Tests; D006386:Hemagglutination Tests; D006801:Humans