Avian Disease, Diagnosis and Treatment

London
Tuesday, 14 November 2006

Avian Disease, Diagnosis and Treatment
Tuesday, 14 November 2006 09:00 - 17:00

The MI Centre
81–103 Euston Street
London
NW1 2EZ.
United Kingdom

Map and Directions

As avian influenza (H5N1) spreads around the world, diagnosis, treatment and prevention are at the forefront of veterinary and medical concerns in order to limit the impact of this zoonotic virus. This meeting will address current issues surrounding not only avian influenza but also advances in methodologies aimed at providing a better understanding of a range of other avian diseases. Including Newcastle disease (ND), Marek's disease, avian coronaviruses and metapneumoviruses. Also, blackhead (histomoniasis), fowl cholera, salmonella, E.coli, coccidiosis, red mite and more. The meeting will provide a forum at which the economic impact, of new and established avian diseases and public and animal health concerns will be discussed. Also, papers on detection, diagnosis, treatment and disease prevention technologies will be presented.

09:15 – 9:45   Registration – tea/coffee and biscuits

9:45 – 10:00   Introduction by the Chair:  Dr Ian Brown, Veterinary Laboratories Agency, Weybridge, Surrey, UK.

10:00 – 10:30  Current developments in AI diagnosis. - Dr Ian Brown, Veterinary Laboratories Agency, Weybridge, Surrey, UK

10:30 – 11:00     Infectious bronchitis coronavirus and avian metapneumovirus infections: diagnosis and molecular epidemiology  - Professor Richard Jones, Faculty of Veterinary Science, University of Liverpool, UK
The diagnostic methods available for infectious bronchitis of chickens and avian pneumoviruses infections in chickens and turkeys are outlined. The value of these methods is illustrated. in determining the distribution of different variants of these viruses regionally and globally and possible means of intercontinental spread

11:00 – 11:30 Mid-morning break

11:30 – 12:00 Avian Mycoplasmosis and advances in diagnosis -
Dr Roger Ayling, Veterinary Laboratories Agency, UK

12:00 – 12:30 Campylobacter – a pain in the gut for humans but not chickens - Dr Georgina Manning, Food and Environmental Safety Programme, Veterinary Laboratories Agency, Weybridge

12:30 – 13:00 Effect of vaccination on the horizontal transmission of Mycoplasma gallisepticum - Dr Anneke Feberwee, Poultry Health Specialist Animal Health Service, Poultry Health Centre, The Netherlands
Although vaccination has been implemented to control Mycoplasma gallisepticum (M.g.) in chickens, its contribution to the elimination of M.g. is unclear. In this study we experimentally quantified the effect of an inactivated and a live vaccine on the horizontal transmission of M.g. Each experiment comprised 20 non-vaccinated and 20 vaccinated SPF hens housed in pairs. Each pair consisted of an M.g.-inoculated chicken and a contact chicken with the same vaccination status. The experiment with the live vaccine was replicated. Infection was detected by quantitative polymerase chain reaction on laryngeal swabs and by serology.

All inoculated chickens but one (live vaccine) became infected. Moreover, all non-vaccinated contact chickens also became infected, as well as all contact chickens vaccinated with the inactivated vaccine. However, in the group vaccinated with the live vaccine in all 7 of the 20 contact chickens escaped infection. We quantified the reproduction ratio, R, defined as the average number of secondary cases caused by one infectious individual, by means of a maximum likelihood method. In the group vaccinated with the killed vaccine R was estimated at ¥ (95%CI 4,48- ¥), which was the same as in the unvaccinated group. In the group vaccinated with the live vaccine R was estimated at 4.3 (95 % CI 1.6-49.9), which was significantly lower than in the non-vaccinated group (95% CI: 9.9 - ¥). However, because R still exceeds 1, the results of this study indicate that vaccination does not prevent spread of M.g. within a flock.

13.00 – 14.00 Lunch

14:00 - 14:30 A Highly Sensitive Neutralization Assay For Avian H5N1 Influenza A Virus Using Retroviral Pseudotypes - Dr Nigel Temperton, Mrc/Ucl Centre For Medical Molecular Virology, University College London

14:30 – 15:00 Salmonellosis in garden birds – a review,
Becki Lawson, Wildlife Veterinarian, Institute of Zoology, Zoological Society of London, UK
Salmonellosis (agent: Salmonella Typhimurium, principally phage types 40, 56 or 160) is one of the most frequently diagnosed infectious causes of mortality in garden birds. Sporadic disease outbreaks have been recorded in Britain since the 1950s, typically peaking during the winter months. Gregarious, granivorous species appear predisposed to the disease with the greenfinch (Carduelis chloris) and house sparrow (Passer domesticus) most frequently affected in Britain. Salmonellosis in garden birds is of welfare and potential conservation concern with relevance to companion animal and public health. The GBHi investigates salmonellosis incidents and aims to identify risk factors that may influence their occurrence.

15:00 – 15:30 Bird Schistosomes In Wildfowl In Central Europe - Dr Jitka Rudolfova, Department of Parasitology, Faculty of Science, Charles University, Czech Republic
Bird schistosomes from the genus Trichobilharzia are intensivelly studied as causative agents of cercarial dermatitis in human, however, little is still known of their pathogenicity and occurrence in wildfowl. Dissections of wildfowl in Central Europe showed relatively high prevalence of Trichobilharzia infection. Schistosomes found were characterized by sequencing of the ITS region of rDNA. One nasal species – T. regenti, and two visceral species – T. szidati and Trichobilharzia sp. – were found. This is the first record of T. szidati in natural final host.

15:30 – 16:00 Afternoon Break

16:00 – 16:30 Disease Surveillance Activities in the UK and current trends- Dr Richard Irvine, DEFRA, UK


16:30 – 17:00 Newcastle disease virus: genetic lineages, population variation & current threats, Dr Liz Aldous, Veterinary Laboratories Agency, Surrey, UK
Newcastle disease virus, an exotic virus to the UK, has hit the headlines twice in the last 18 months for disease outbreaks in game birds. This talk will provide an introduction to the virus and disease, look at the current detection and differentiation techniques and will discuss virus strains that may represent the current threats on a national and international level.

17:00 Chairman’s summing up & Afternoon Tea

Registration fees

  • Standard fee - £400
  • Academic fee - £199
  • Student fee- £140
  • IBMS members fee - £199


 

 

Contact Details

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