Expanded List of Infectious Diseases in Chickens (English & Latin Names, Causes, Ages, Prevalence, Treatments)

Expanded List of Infectious Diseases in Chickens (English & Latin Names, Causes, Ages, Prevalence, Treatments)

This expanded document offers a more complete catalog of infectious diseases in chickens, categorized by type (viral, bacterial, parasitic, fungal, and zoonotic). For each disease, the list includes the scientific (Latin) name, causative agent, typical age of infection, prevalence, and standard treatment options. This is a vital reference for poultry producers, veterinary scientists, field epidemiologists, and biosecurity specialists.


🦠 Viral Diseases in Chickens

English NameLatin NameCauseCommon Age AffectedPrevalenceKey Treatment or Vaccine Ingredients
Newcastle DiseaseAvian orthoavulavirus 1VirusAll agesHighLive or inactivated vaccines
Avian Influenza (H5, H7 subtypes)Influenzavirus AVirusAll agesVariableStrict biosecurity, culling
Marek’s DiseaseGallid herpesvirus 2Virus6–20 weeksHighHVT vaccine, CVI988
Infectious BronchitisAvian coronavirusVirus1–6 weeksVery HighLive Mass-type vaccines
Infectious Bursal Disease (Gumboro)Birnavirus (IBDV)Virus3–6 weeksHighIntermediate or hot vaccines
Fowl PoxAvipoxvirusVirusAll agesModerateWing-web vaccine
Avian EncephalomyelitisAvian encephalomyelitis virusVirus<16 weeks (chicks)ModerateLive vaccine (via breeders)
Egg Drop SyndromeDuck adenovirus 1VirusLayersLowInactivated vaccine
LaryngotracheitisGallid herpesvirus 1VirusLayers >10 weeksModerateEye-drop live attenuated vaccine
Avian LeukosisAvian leukosis virusVirusAdultsModerateNo treatment; genetic selection
Chicken Anemia VirusGyrovirus (CAV)Virus<3 weeksModerateLive vaccine for breeders
Reovirus InfectionsAvian reovirusVirusAll agesVariableInactivated/live vaccine in breeders
Infectious Tenosynovitis (Viral arthritis)Avian reovirusVirusBroilers, 4–7 weeksModerateBreeder vaccination

🧫 Bacterial Diseases in Chickens

English NameLatin NameCauseCommon Age AffectedPrevalenceTreatment Ingredients
Fowl CholeraPasteurella multocidaBacteria>10 weeksModerateTetracyclines, Sulfonamides
Pullorum DiseaseSalmonella pullorumBacteria<3 weeksLowCulling, strict hygiene
Fowl TyphoidSalmonella gallinarumBacteriaLayersLowCulling, hygiene
Mycoplasmosis (CRD)Mycoplasma gallisepticum/synoviaeBacteriaAll agesHighTylosin, Enrofloxacin
Infectious CoryzaAvibacterium paragallinarumBacteria>6 weeksModerateDoxycycline, Erythromycin
ColibacillosisEscherichia coliBacteriaAll agesVery HighGentamicin, Amoxicillin
Necrotic EnteritisClostridium perfringensBacteria3–6 weeksHighBacitracin, Virginiamycin
Omphalitis (Yolk Sac Infection)E. coli, Staphylococcus spp.BacteriaHatchlingsModerateBroad-spectrum antibiotics
BotulismClostridium botulinumBacteriaAll agesLowSupportive care, antitoxin
Tuberculosis (Avian TB)Mycobacterium aviumBacteriaOlder birdsRareCulling, sanitation
ErysipelasErysipelothrix rhusiopathiaeBacteriaLayers, breedersLowPenicillin, vaccination

🪱 Parasitic Diseases in Chickens

English NameLatin NameCauseAge AffectedPrevalenceTreatment Ingredients
CoccidiosisEimeria spp.Protozoa3–8 weeksVery HighAmprolium, Sulfaquinoxaline
Histomoniasis (Blackhead disease)Histomonas meleagridisProtozoaAll agesLowNo effective drugs approved (off-label dimetridazole historically)
AscaridiasisAscaridia galliNematodeAll agesModeratePiperazine, Levamisole
CapillariasisCapillaria spp.NematodeAll agesModerateAlbendazole, Fenbendazole
Syngamosis (Gapeworm)Syngamus tracheaNematodeYoung birdsLowIvermectin, Flubendazole
External Mites (Red mites, Scaly leg)Dermanyssus gallinae, Knemidocoptes spp.EctoparasiteAll agesHighPermethrin, Spinosad
Lice InfestationMenacanthus stramineusEctoparasiteAll agesModerateCarbaryl, Pyrethrins

🍄 Fungal Diseases in Chickens

English NameLatin NameCauseCommon Age AffectedPrevalenceKey Treatment Ingredients
AspergillosisAspergillus fumigatusFungusChicksModerateItraconazole, copper sulfate aerosol
Candidiasis (Thrush)Candida albicansFungusChicksLowNystatin, Acidified copper sulfate
Favus (Avian Ringworm)Trichophyton gallinaeFungusAll agesRareMiconazole, iodine tincture

🔬 Zoonotic Diseases Transmissible from Chickens to Humans

English NameLatin NameCauseRisk to Humans
SalmonellosisSalmonella spp.BacteriaHigh
CampylobacteriosisCampylobacter jejuniBacteriaHigh
Avian Influenza (H5N1, H7N9)Influenzavirus AVirusHigh (HPAI subtypes)
Newcastle DiseaseAvian orthoavulavirus 1VirusLow (eye infection)
Erysipelas (occupational)Erysipelothrix rhusiopathiaeBacteriaModerate
Avian TuberculosisMycobacterium avium complexBacteriaLow in immunocomp.

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