Infectious laryngotracheitis : Etiology, epidemiology, pathobiology, and advances in diagnosis and control - a comprehensive review

Infectious laryngotracheitis (ILT) is a highly contagious upper respiratory tract disease of chicken caused by a Gallid herpesvirus 1 (GaHV-1) belonging to the genus Iltovirus, and subfamily Alphaherpesvirinae within Herpesviridae family. The disease is characterized by conjunctivitis, sinusitis, oculo-nasal discharge, respiratory distress, bloody mucus, swollen orbital sinuses, high morbidity, considerable mortality and decreased egg production. It is well established in highly dense poultry producing areas of the world due to characteristic latency and carrier status of the virus. Co-infections with other respiratory pathogens and environmental factors adversely affect the respiratory system and prolong the course of the disease. Latently infected chickens are the primary source of ILT virus (ILTV) outbreaks irrespective of vaccination. Apart from conventional diagnostic methods including isolation and identification of ILTV, serological detection, advanced biotechnological tools such as PCR, quantitative real-time PCR, next generation sequencing, and others are being used in accurate diagnosis and epidemiological studies of ILTV. Vaccination is followed with the use of conventional vaccines including modified live attenuated ILTV vaccines, and advanced recombinant vector vaccines expressing different ILTV glycoproteins, but still these candidates frequently fail to reduce challenge virus shedding. Some herbal components have proved to be beneficial in reducing the severity of the clinical disease. The present review discusses ILT with respect to its current status, virus characteristics, epidemiology, transmission, pathobiology, and advances in diagnosis, vaccination and control strategies to counter this important disease of poultry.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:40

Enthalten in:

The veterinary quarterly - 40(2020), 1 vom: 31. Dez., Seite 140-161

Sprache:

Englisch

Beteiligte Personen:

Gowthaman, Vasudevan [VerfasserIn]
Kumar, Sachin [VerfasserIn]
Koul, Monika [VerfasserIn]
Dave, Urmil [VerfasserIn]
Murthy, T R Gopala Krishna [VerfasserIn]
Munuswamy, Palanivelu [VerfasserIn]
Tiwari, Ruchi [VerfasserIn]
Karthik, Kumaragurubaran [VerfasserIn]
Dhama, Kuldeep [VerfasserIn]
Michalak, Izabela [VerfasserIn]
Joshi, Sunil K [VerfasserIn]

Links:

Volltext

Themen:

Chicken
Control
Diagnosis
Epidemiology
Herpesvirus Vaccines
ILT
Infectious Laryngotracheitis virus
Journal Article
Pathobiology
Poultry
Review
Vaccine

Anmerkungen:

Date Completed 25.03.2021

Date Revised 25.03.2021

published: Print

Citation Status MEDLINE

doi:

10.1080/01652176.2020.1759845

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM309000106