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Home > Animal health in the World > OIE-Listed diseases 2021

OIE-Listed diseases, infections and infestations
in force in 2021

Resolutions passed by the International Committee and recommendations issued by the Regional Commissions instructed the OIE Headquarters to establish a single OIE list of notifiable terrestrial and aquatic animal diseases to replace the former Lists A and B.

The aim in drawing up a single list was to be in line with the terminology of the Sanitary and Phytosanitary Agreement of the World Trade Organization, by classifying diseases as specific hazards and giving all listed diseases the same degree of importance in international trade.

In order to create a single list of notifiable diseases, the OIE defined criteria to examine the inclusion or not of a given disease in the OIE single list that were approved in May 2004.

In 2005, the first single list composed of former lists A and B was used, and in the same year, an Ad Hoc Group on disease and pathogenic agents notification was organized to examine diseases according to the adopted criteria for listing diseases, and proposed a new list of diseases meeting the criteria that entered into force in 2006.

The list is reviewed on a regular basis and in case of modifications adopted by the World Assembly of Delegates at its annual General Session, the new list comes into force on 1 January of the following year.

The Standard Operating Procedures that govern the decision to add (or remove) pathogenic agents of terrestrial animals to (or from) the OIE List are found here.


For year 2021, the list includes 117 animal diseases, infections and infestations.

Multiple species diseases, infections and infestations


  • Anthrax
  • Crimean Congo haemorrhagic fever
  • Equine encephalomyelitis (Eastern)
  • Heartwater
  • Infection with Aujeszky's disease virus
  • Infection with bluetongue virus
  • Infection with Brucella abortus, Brucella melitensis and Brucella suis
  • Infection with Echinococcus granulosus
  • Infection with Echinococcus multilocularis
  • Infection with epizootic haemorrhagic disease virus
  • Infection with foot and mouth disease virus
  • Infection with Mycobacterium tuberculosis complex
  • Infection with rabies virus
  • Infection with Rift Valley fever virus
  • Infection with rinderpest virus
  • Infection with Trichinella spp.
  • Japanese encephalitis
  • New world screwworm (Cochliomyia hominivorax)
  • Old world screwworm (Chrysomya bezziana)
  • Paratuberculosis
  • Q fever
  • Surra (Trypanosoma evansi)
  • Tularemia
  • West Nile fever

Cattle diseases and infections


  • Bovine anaplasmosis
  • Bovine babesiosis
  • Bovine genital campylobacteriosis
  • Bovine spongiform encephalopathy
  • Bovine viral diarrhoea
  • Enzootic bovine leukosis
  • Haemorrhagic septicaemia
  • Infectious bovine rhinotracheitis/infectious pustular vulvovaginitis
  • Infection with lumpy skin disease virus
  • Infection with Mycoplasma mycoides subsp. mycoides SC (contagious bovine pleuropneumonia)
  • Theileriosis
  • Trichomonosis
  • Trypanosomosis (tsetse-transmitted)

Sheep and goat diseases and infections


  • Caprine arthritis/encephalitis
  • Contagious agalactia
  • Contagious caprine pleuropneumonia
  • Infection with Chlamydia abortus (Enzootic abortion of ewes, ovine chlamydiosis)
  • Infection with peste des petits ruminants virus
  • Maedi-visna
  • Nairobi sheep disease
  • Ovine epididymitis (Brucella ovis)
  • Salmonellosis (S. abortusovis)
  • Scrapie
  • Sheep pox and goat pox

Equine diseases and infections


  • Contagious equine metritis
  • Dourine
  • Equine encephalomyelitis (Western)
  • Equine infectious anaemia
  • Equine influenza
  • Equine piroplasmosis
  • Infection with African horse sickness virus
  • Infection with equid herpesvirus-1 (EHV-1)
  • Infection with equine arteritis virus
  • Infection with Burkholderia mallei (Glanders)
  • Venezuelan equine encephalomyelitis

Swine diseases and infections


  • Infection with African swine fever virus
  • Infection with classical swine fever virus
  • Infection with porcine reproductive and respiratory syndrome virus
  • Infection with Taenia solium (Porcine cysticercosis)
  • Nipah virus encephalitis
  • Transmissible gastroenteritis

Avian diseases and infections


  • Avian chlamydiosis
  • Avian infectious bronchitis
  • Avian infectious laryngotracheitis
  • Avian mycoplasmosis (Mycoplasma gallisepticum)
  • Avian mycoplasmosis (Mycoplasma synoviae)
  • Duck virus hepatitis
  • Fowl typhoid
  • Infection with avian influenza viruses
  • infection with influenza A viruses of high pathogenicity in birds other than poultry including wild birds
  • Infection with Newcastle disease virus
  • Infectious bursal disease (Gumboro disease)
  • Pullorum disease
  • Turkey rhinotracheitis

Lagomorph diseases and infections


  • Myxomatosis
  • Rabbit haemorrhagic disease

Bee diseases, infections and infestations

  • Infection of honey bees with Melissococcus plutonius (European foulbrood)

  • Infection of honey bees with Paenibacillus larvae (American foulbrood)

  • Infestation of honey bees with Acarapis woodi

  • Infestation of honey bees with Tropilaelaps spp.

  • Infestation of honey bees with Varroa spp. (Varroosis)

  • Infestation with Aethina tumida (Small hive beetle).

Other diseases and infections

  • Camelpox
  • Leishmaniosis

Fish diseases


  • Infection with Aphanomyces invadans (epizootic ulcerative syndrome)
  • Infectionwith epizootic haematopoietic necrosis virus
  • Infection with Gyrodactylus salaris
  • Infection with HPR-deleted or HPRO infectious salmon anaemia virus
  • IInfection with infectious haematopoietic necrosis
  • Infection with koi herpesvirus 
  • Infection with red sea bream iridovirus
  • Infection with salmonid alphavirus
  • Infection with spring viraemia of carp virus
  • Infection with viral haemorrhagic septicaemia virus

Mollusc diseases

  • Infection with abalone herpesvirus
  • Infection with Bonamia exitiosa
  • Infection with Bonamia ostreae
  • Infection with Marteilia refringens
  • Infection with Perkinsus marinus
  • Infection with Perkinsus olseni
  • Infection with Xenohaliotis californiensis


Crustacean diseases


  • Acute hepatopancreatic necrosis disease
  • Infection with Aphanomyces astaci (crayfish plague)
  • Infection with Hepatobacter penaei (necrotising hepatopancreatitis)
  • Infection with infectious hypodermal and haematopoietic necrosis virus
  • Infection with infectious myonecrosis virus
  • Infection with Macrobrachium rosenbergii nodavirus (white tail disease)
  • Infection with Taura syndrome virus
  • Infection with white spot syndrome virus
  • Infection with yellow head virus genotype 1




  • Infection with Batrachochytrium dendrobatidis
  • Infection with Batrachochytrium salamandrivorans
  • Infection with Ranavirus species