TABLE 1.

Strains used in this study

StrainYr isolatedCountry of isolationSourceaOriginal laboratory identification
6th Pandemic
    M6421943IndiaNCTC6585
7th Pandemic
    M7931961IndonesiaUniversity of MarylandE9120
    M8031961Hong KongInstitut PasteurHK1
    M8041962IndiaInstitut Pasteur930030
    M8051963CambodiaInstitut Pasteur930059
    M8061964IndiaInstitut PasteurCRC1106
    M8071966VietnamInstitut Pasteur601
    M6861968ThailandAFRIMSSP-EV-29-1
    M8081969VietnamInstitut Pasteur1536
    M6471970BangladeshCCUG13119
    M8091970Sierra LeoneInstitut Pasteur930037
    M8101970EthiopiaInstitut Pasteur930038
    M8111971BurmaInstitut Pasteur930029
    M8121971ChadInstitut Pasteur930046
    M8131972SenegalInstitut Pasteur9292
    M8141972MorroccoInstitut Pasteur113
    M8151973PhilippinesInstitut Pasteur430035
    M8161974SenegalInstitut PasteurB998C
    M8171974ChadInstitut Pasteur99
    M8181975Comoros IslandsInstitut Pasteur102
    M8191975GermanybInstitut Pasteur232
    M6501976IndiaNational Institute of Cholera762/76
    M7951976BangladeshUniversity of Maryland30167
    M8201978MalaysiaInstitut PasteurEB 251/1MR
    M7141979ThailandAFRIMS96A/CO
    M6461979BangladeshCCUG9193
    M6521981IndiaNational Institute of Cholera1200/81
    M7231982ThailandAFRIMSWR-32
    M8211982FrancebInstitut PasteurAssous M
    M8221983VietnamInstitut Pasteur359
    M8231984AlgeriaInstitut PasteurMarquez
    M7401985ThailandAFRIMSD-145
    M7971986Hong KongUniversity of Hong KongV31
    M8241987AlgeriaInstitut PasteurMekki
    M8251988ZaireInstitut PasteurZaire1
    M7641989ThailandAFRIMSFX-41-3
    M7991989Hong KongUniversity of Hong KongIn21
    M8261990MalawiInstitut PasteurBakala Malenge
    M8271990GuineaInstitut PasteurGuinea1
    M7911991ThailandAFRIMSCX-043-0
    M6541991IndiaNational Institute of Cholera413/91
    M8281991MorroccoInstitut PasteurAkretche
    M6631992Indonesia (Bali)IMVS2100
    M8291992MalawiInstitut PasteurF. Francisco
    M6621993Indonesia (Bali)State Health Laboratory, Perth7340
Pre-7th pandemic
    M8021937Indonesia (Sulawesi)Institut Pasteur66-2
    M6401954EgyptNCTC9420
U.S. Gulf
    M7961978LouisianaUniversity of Maryland4808
Latin America
    M8301993French GuianaInstitut PasteurModesto
  • a NCTC, National Collection of Type Cultures, London, England; CCUG, Culture Collection of the University of Goteborg, Goteborg, Sweden; Institut Pasteur, Paris, France; University of Maryland, Center for Vaccine Development, University of Maryland, Baltimore; AFRIMS, Armed Forces Research Institute of Medical Sciences, Bangkok, Thailand; National Institute of Cholera, National Institute of Cholera and Enteric Diseases, Calcutta, India; University of Hong Kong, Hong Kong, China; IMVS, Institute of Medical and Veterinary Sciences, Adelaide, Australia; State Health Laboratory, Perth, Australia; ICDDR, International Center for Diarrhoeal Disease Research, Dhaka, Bangladesh.

  • b Probably isolated from travellers from Asia or Africa.