The Early History of Infectious Bronchitis

Fabricant, J.

doi:10.2307/1592697

Cited by 92 publications

(78 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Thus, this study aimed to isolate the current circulating isolates of IBV in north ern Egypt, characterize and compare them to other recently isolated strains in Egypt and neighbouring countries. The usage of embryonated chicken eggs for the diagnosis of IBV was considered as the method of choice for virus isolation (Cunningham 1970;Fabricant 1998). Characteristic curling and dwarfing were observed in the SPF eggs inoculated with the suspected samples after one to three passages.…”

Section: Discussionmentioning

confidence: 99%

Isolation and Characterization of New Variant Strains of Infectious Bronchitis Virus in Northern Egypt

El-Rahman¹,

Hoffmann²,

Lueschow³

et al. 2015

Adv. Anim. Vet. Sci.

View full text Add to dashboard Cite

| Infectious bronchitis virus (IBV) is the causative agent of an acute and highly contagious disease affecting the respiratory, renal and/or reproductive systems of chicken called infectious bronchitis disease. Controlling of this disease needs continuous identification of the circulating strains and genotypes. In the present study, six IBV samples were isolated from different poultry farms located in northern Egypt and propagated in the allantoic cavity of specific pathogen-free embryonated chicken eggs causing curling and dwarfing of embryos at different serial egg passages. The harvested allantoic fluids were titrated by chicken embryo kidney cell cultures selecting suitable viral concentrations for investigating the ciliostasis effect of IBV on tracheal organ cell cultures. In addition, the nucleotide and protein sequences of the IBV spike glycoprotein (S) were used for molecular relationship analysing and construction of phylogenetic trees. All examined viruses induced complete ciliostasis at the fifth day post inoculation. Isolates shared total sequence identities of 99-100% on nucleotide and amino acid levels. The Egyptian strain (Eg/CLEVB-1/IBV/012) showed 99% and the Israeli strain (IS/1494/06 IBV) showed 98% with the collected isolates and recognized as the local strains with the highest total sequence identities and phylogenetic relatedness of all strains available from the Gene Bank. The Italy02 strain of IBV is the nearest relative to the collected isolates with total sequence identities of 79 and 77% at nucleotide and amino acid levels, respectively. The new variant strains currently isolated from the northern of Northern Egypt should be evaluated periodically for developing suitable autogenously based virus vaccines.

show abstract

Section: Discussionmentioning

confidence: 99%

Isolation and Characterization of New Variant Strains of Infectious Bronchitis Virus in Northern Egypt

El-Rahman¹,

Hoffmann²,

Lueschow³

et al. 2015

Adv. Anim. Vet. Sci.

View full text Add to dashboard Cite

show abstract

“…Since the respiratory form of infectious bronchitis was first reported in the 1930s (reviewed by Fabricant, 1998), nephropathogenic (Albassam et al, 1986;Cavanagh & Naqi, 2003) and enterotropic (Ambali & Jones, 1990) IBV strains, some with affinity for the reproductive tract (Cavanagh & Naqi, 2003), have been reported. In 2003 a new serotype of IBV emerged in Europe, causing severe kidney damage, high morbidity and occasionally false layer syndrome in infectious bronchitis vaccinated flocks.…”

Section: Discussionmentioning

confidence: 99%

“…type of IBV were found (reviewed by Fabricant, 1998). The majority of the previously unknown serotypes or variants, identified in the past two decades around the world, have either disappeared or become endemic in certain geographical areas (Bochkov et al, 2006), while some of them have become widespread and predominant in the majority of the countries with a significant poultry industry over a period of time (Terregino et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Comparison of the pathogenicity of QX-like, M41 and 793/B infectious bronchitis strains from different pathological conditions

Benyeda

Mató²,

Süveges³

et al. 2009

Avian Pathology

121

113

View full text Add to dashboard Cite

Five QX-like infectious bronchitis virus (IBV) strains, isolated from different field outbreaks and two reference IBV strains of known serotypes (M41 and 793/B), were used in the present study to investigate and compare their pathogenicity for 1-day-old specific pathogen free chickens. The ability of the strains to inhibit trachea epithelium ciliary activity, to induce immune response, to replicate and to cause histopathological lesions in designated organs was followed by repeated samplings during a period of 42 days post infection. Clear differences in pathogenicity and in organ distribution of the three serotypes were found. Strain 793/B had the least capacity to invade the investigated organs, while it produced a good humoral response as measured by enzyme-linked immunosorbent assay. The QX-like strains generally replicated to higher titres, although differences were found among the five strains in their pathogenicity and affinity for different organs. The Chinese isolate of QX-like virus caused the most severe lesions and induced the highest antibody titres. Severe kidney damage and dilatation of the oviduct were the prominent lesions that could be related to the QX-like IBV strains, although neither marked virus replication nor histopathological lesions were detected in the oviduct.

show abstract

“…These methods focus on either detecting or isolating the virus itself or detecting serum antibodies to it. Pioneering work in the USA by Cunningham (1970) at East Lansing and by Fabricant (1998) at Cornell University established that IBV grows well in embryonated eggs, and passage of field material via the allantoic route of 9-day-old embryos became the method of choice for virus isolation. The virus causes characteristic curling and stunting of the embryo, visible after about 7 days incubation and, after serial passage, embryo mortality may be observed with field strains.…”

Section: Infectious Bronchitis Research Prior To First Publication Ofmentioning

confidence: 99%

The long view: 40 years of infectious bronchitis research

Cook¹,

2012

View full text Add to dashboard Cite

The Early History of Infectious Bronchitis

Cited by 92 publications

References 3 publications

Isolation and Characterization of New Variant Strains of Infectious Bronchitis Virus in Northern Egypt

Isolation and Characterization of New Variant Strains of Infectious Bronchitis Virus in Northern Egypt

Comparison of the pathogenicity of QX-like, M41 and 793/B infectious bronchitis strains from different pathological conditions

The long view: 40 years of infectious bronchitis research

Contact Info

Product

Resources

About