Replication and Transmission of Live Attenuated Infectious Laryngotracheitis Virus (Iltv) Vaccines

Rodríguez-Avila, Andrés; Oldoni, Ivomar; Riblet, Sylva M.; Garcı́a, Maricarmen

doi:10.1637/1933-5334(2007)2[e8:ratola]2.0.co;2

Cited by 10 publications

(16 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is consistent with previously reported results, indicating that greater viral replication was detected in the respiratory organs (Oldoni et al, 2009;Rodríguez Avila et al, 2007). However, other organs, such as the lungs, cecal tonsils, digestive tract, and kidneys were also positive.…”

Section: Discussionsupporting

confidence: 93%

“…Molecular techniques, such as polymerase chain reaction (PCR), have been successfully used for the detection of ILTV in respiratory and other organs (Chacón et al, 2007;Oldoni et al, 2009;Rodríguez Avila et al, 2007). Polymerase chain reaction presents high sensitivity and specificity for the detection of ILTV.…”

Section: Occurrence Of Infectious Laryngotracheitis Virus (Iltv) In 2mentioning

confidence: 99%

See 1 more Smart Citation

Occurrence of infectious Laryngotracheitis Virus (ILTV) in 2009-2013 in the State of São Paulo - Brazil

Parra

Nuñez

Astolfi-Ferreira

et al. 2015

Rev. Bras. Cienc. Avic.

View full text Add to dashboard Cite

Infectious laryngotracheitis is a very important respiratory disease because it causes significant economic losses in the poultry industry. The target of ILTV infections is the respiratory system, and the main organ in which the virus remains latent is the trigeminal ganglia. However, the virus has demonstrated tropism for other organs as well. The present study was conducted to determine the presence of Infectious Laryngotracheitis Virus (ILTV) in the state of São Paulo. Samples submitted to LABOR-USP during the last four years (2009)(2010)(2011)(2012)(2013) analyzed by a nested/PCR technique. Out of the 682 samples from layers tested for LTIV, 12.46 % were positive, and derived from in both traditional (trachea and trigeminal ganglion) and untraditional (cecal tonsils, digestive tract and kidneys) organs utilized for ILTV diagnosis.

show abstract

Section: Discussionsupporting

confidence: 93%

Section: Occurrence Of Infectious Laryngotracheitis Virus (Iltv) In 2mentioning

confidence: 99%

Occurrence of infectious Laryngotracheitis Virus (ILTV) in 2009-2013 in the State of São Paulo - Brazil

Parra

Nuñez

Astolfi-Ferreira

et al. 2015

Rev. Bras. Cienc. Avic.

View full text Add to dashboard Cite

show abstract

“…(Figure 3a). In a recent study (Rodríguez-Avila et al, 2007) viral DNA was detected in the trigeminal ganglia of birds 4 days after contact exposure to CEO origin-vaccinated pen mates. Together these results further confirm the involvement of the trigeminal ganglia during the early pathogenesis of ILTV infection .…”

Section: Discussionmentioning

confidence: 94%

“…Virus isolation was performed in adult CK cells as previously described by Rodríguez-Avila et al (2007). The bursa, thymus, spleen, lung, trigeminal ganglia, trachea and caecal tonsil tissue suspensions, and the conjunctiva, sinuses, and cloacal swab suspensions were inoculated directly into CK cells and incubated at 378C, 5% CO 2 for 5 days.…”

Section: Methodsmentioning

confidence: 99%

Pathogenicity and growth characteristics of selected infectious laryngotracheitis virus strains from the United States

et al. 2009

Self Cite

View full text Add to dashboard Cite

In a recent study, several US infectious laryngotracheitis virus (ILTV) strains and field isolates were genotyped by polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) into nine different genotypes. All of the commercial poultry isolates were identified within genotypes IV, V, and VI. Based on the PCR-RFLP, Group IV isolates were characterized as genetically identical to the chicken embryo origin (CEO) vaccines, Group V as genetically closely related to the CEO vaccines, and Group VI as genetically different to the vaccine strains. The objective of this study was to determine the pathogenicity and growth characteristics of six ILTV commercial poultry isolates as compared with the CEO vaccine. Two isolates representative of PCR-RFLP Groups IV, V, and VI were selected. Differences in disease severity, viral tissue distribution in chickens, and plaque formation ability in cell culture were observed among viral genotypes IV, V, and VI, and between V-A and V-B isolates. Mild respiratory clinical signs were produced by IV-A, IV-B and the CEO vaccine, while VI-A and VI-B isolates produced severe respiratory signs and severe depression, and during the peak of clinical signs both isolates were re-isolated from the conjunctiva, sinus, trachea and thymus. Similarly to Group VI isolates, V-A and V-B produced severe respiratory signs, depression, and were re-isolated from conjunctiva, sinus, and trachea; on cell culture, both isolates produced significant larger plaques than any of the other isolates analysed. Overall, differences in pathogenicity and growth characteristics were observed among genetically closely related US ILTV isolates; however, complete genomes will be necessary to identify molecular determinants linked to the pathogenic viral phenotypes.

show abstract

“…In contrast to CEO, mass application of the TCO vaccine is not an option because eye-drop application is the sole delivery method (Gelenczei & Marty, 1964). Similar to CEO vaccines, the TCO vaccine can replicate in the trachea and conjunctiva, although to a lesser extent than the CEO vaccines, and both vaccines can transmit from bird to bird (Rodríguez-Avila et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Molecular epidemiology of infectious laryngotracheitis: a review

et al. 2014

Self Cite

View full text Add to dashboard Cite

Replication and Transmission of Live Attenuated Infectious Laryngotracheitis Virus (Iltv) Vaccines

Cited by 10 publications

References 0 publications

Occurrence of infectious Laryngotracheitis Virus (ILTV) in 2009-2013 in the State of São Paulo - Brazil

Occurrence of infectious Laryngotracheitis Virus (ILTV) in 2009-2013 in the State of São Paulo - Brazil

Pathogenicity and growth characteristics of selected infectious laryngotracheitis virus strains from the United States

Molecular epidemiology of infectious laryngotracheitis: a review

Contact Info

Product

Resources

About