The Technology Behind VAXXITEK® HVT + IBD

Never mind the calendar. Stop calculating maternal antibodies. Take the uncertainty out of infectious bursal disease (IBD) vaccine schedules. Advanced vector technology delivers a simpler solution to IBD vaccination.

WHY: The Reason We Developed VAXXITEK HVT + IBD 

Chicks absorb maternal antibodies against IBD that gradually decline as the bird grows, but while still present can interfere with some forms of vaccination. This interference may leave the bird with an unprotected window of time—the "immunity gap"—as maternal antibodies decline but before the next vaccine dose is administered. Because of the high variability of levels of maternal IBD antibodies across individual birds, calculating appropriate timing of vaccine doses can be challenging and laborious.

WHAT: Vector Technology for "2-in-1" Protection

Our solution? Develop an advanced vector vaccine:

  • Instead of a whole IBD virus VAXXITEK HVT + IBD uses only the viral protein 2 (VP2), a major protective antigen of the IBD virus, to stimulate IBD immunity
  • A live, whole herpesvirus of turkeys (HVT) is used as the vaccine vector; HVT is non-pathogenic to chickens, but closely related to the Marek's virus, thus stimulating immunity against that disease
  • The HVT vector replicates systemically in the bird, inducing protection against two important diseases in a single vaccine
  • It has been demonstrated in published research that both IBD VP2 and HVT experience minimal interference from inherited maternal antibodies in chickens12
  • As a result, VAXXITEK HVT + IBD can be administered early* with just a single dose10 at the hatchery on a pre-defined schedule: either in-ovo (at 18-19 days) or subcutaneously to healthy day-old chicks
  • Early administration means VAXXITEK HVT + IBD can begin building immunity that will gradually take over as maternal antibodies fade away; several published studies have shown reduced opportunity for an immunity gap11-12, 18-19

HOW: The Technology's Mode of Action

Interested in the science behind VAXXITEK HVT + IBD's mode of action?

WATCH "THE 3rd GENERATION OF IBD VACCINE"

WHERE: IBD Protection Around the World

The specific VP2 gene used in VAXXITEK HVT + IBD comes from the Faragher 52/70 strain of the IBD virus. It was isolated during the earliest days of IBD outbreaks and is thought to be the progenitor strain of subsequent IBD virus strains. As such, the Faragher 52/70 insert enables production by VAXXITEK HVT + IBD of the proper antigen to stimulate the immunity of poultry against a wide variety of IBD virus pathotypes 

In fact, more than 65+ scientific papers published to date (see all) have shown that VAXXITEK HVT + IBD stimulated immunity against many different pathotypes of the IBD virus found worldwide, including classic, variant, and very virulent strains.* It has been used to help prevent IBD and Marek's disease (as does an HVT vaccine) on every continent in the world.

Innovative vector technology helps simplify the timing and process of IBD vaccination...

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Referenced Publications

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1. Fernandez R, Rojo F, Garcia H, Sanchez P, Martinez H, Menendez A, Ruiz H et al. Field efficacy in broiler chickens in Latin America of vHVT-013, a Marek’s HVT vector vaccine expressing VP2 in infectious bursal disease virus. Oral presentation and abstract at the 15th congress of the World Veterinary Poultry Association, 2007; p199.

2. Atienza JC, Nagera AJ, Martinez PO, Baysac ND, Castillo MT, Damaso VR, Lemière S. Evaluation of a herpesvirus of turkey vector vaccine inducing protection against infectious bursal and Marek’s diseases (VAXXITEK® HVT+IBD) under Philippines field conditions. Oral presentation. XXIII World Poultry Congress, Brisbane, Australia. 2008. Article wpc0801684, 9 p.

3. Garritty AT. The eff ect of vectored HVT+IBD (Vaxxitek® HVT + IBD) vaccination on body weights, uniformity and virus shedding in commercial broilers. Abstract. International Poultry Scientifi c Forum, Atlanta, 2011; p31.

4. Godinho E, Pereira CJ, Fernandez A, Lemiere S. Case study of broiler chicken carcass condemnation in Brazil – Improved control using a herpesvirus turkey-infectious bursal disease (HVT-IBD) vector vaccine. Oral presentation. XVIIth Congress of the World Veterinary Poultry Association, Cancun, Mexico, 2011.

5. Hoerr FJ. Clinical Aspects of Immunosuppression in Poultry. Avian Dis., 2010; 54:2-15.

6. Naqi S, Thompson G, Bauman B, Mohammed H. The Exacerbating Effect of Infectious Bronchitis Virus Infection on the Infectious Bursal Disease Virus-Induced Suppression of Opsonization by Escherichia coli Antibody in Chickens. Avian Dis., 2001; 45:52-60.

7. Alonso Castro M, Merino Cabria D, Fernandez Garcia D, Torrubia Diaz J, Herreras Viejo R, Fernandez Revuelta J, Mateo Oyague J, Carvajal Uruena A. Evaluation of the effects of vaccination with a HVT-IBD vector vaccine on bursa Fabricii, production parameters and meat properties in broilers. Abstract. XVIIIth Congress of the World Veterinary Poultry Association, Nantes, France, 2013; in-press.

8. Devaud I, Herin JB, Trotel A, Pagot E, Voisin F. A field study in commercial layers to evaluate the effects of an HVT-IBD vector vaccine on production performances in comparison with a live IBD vaccine. Abstract. XVIIIth Congress of the World Veterinary Poultry Association, Nantes, France, 2013; in-press.

9. Lemiere S, Gauthier J.C., Kodjo A., Vinit L., Delvecchio A., Prandini F. Evaluation of the Protection against Infectious Bursal Disease (IBD) Challenge in Progeny Born to Parents Having Received a Vaccination Program Using Herpesvirus of Turkey-Infectious Bursal Disease (HVT-IBD) Vector Vaccine. World J. Vaccines, 2013; 3:46-51.

10. Goutebroze S, Curet M, Jay ML, Roux C, Le Gros F-X. Efficacy of a recombinant vaccine HVT-VP2 against Gumboro disease in the presence of maternal antibodies. British Poultry Science, 2003;44:824-825.

11. Massi P, Tosi G, Fiorentini L. Experimental challenge trial with a «very virulent» strain of Infectious Bursal Disease virus (vvIBDV) in commercial pullets vaccinated with an IBD vectored vaccine or with three different modified live vaccines. Zootecnica International, November 2008;50-57.

12. Bublot M, Pritchard N, Le Gros F-X, Goutebroze S. Use of a vectored vaccine against infectious bursal disease of chickens in the face of high-titred maternally derived antibody. Journal of Comparative Pathology, 2007;137:81-84.

13. Ganapathy K, Wilkins M, Forrester A, Jones RC, Lemiere S. Protection and immune responses against virulent infectious bronchitis viruses in HVT-IBD recombinant or IBD-complex vaccinated broiler chicks. Abstract. 1st International Respiratory Disease Conference, Athens, United States of America, 2011; p15.

14. Lemiere S, Wilkins M, Forrester A, Jones R, Ganapathy K. Protection and immune responses against virulent infectious bronchitis (IB) viruses in herpesvirus turkey-infectious bursal disease (HVT-IBD) vaccinated broiler chicks. Poster presentation. XVIIth Congress of the World Veterinary Poultry Association, Cancun, Mexico, 2011.

15. Rautenschlein S, Lemiere S, Prandini F. Evaluation of the effects of an HVT-IBD vector vaccine on the immune system of layer pullets in comparison with two commercial live IBD vaccines. Abstract. XVIIIth Congress of the World Veterinary Poultry Association, Nantes, France, 2013; in-press.

16. Rosenberger JK, Cloud SS. Identification and characterization of variant infectious bursal disease variant viruses. Journal of American Veterinary Medicine Association, 1986;189:357.

17. Cheville NF. Studies on the pathogenesis of Gumboro disease in the bursa of Fabricius, spleen and thymus of the chicken. American Journal of Pathology, 1967;51:527-551.

18. Le Gros F-X, Dancer A, Giacomini C, Pizzoni L, Bublot M, Graziani M, Prandini F. Field efficacy trial of a novel HVT-IBD vector vaccine for 1 day-old broilers. Vaccine, 2009;27:592-596.

19. Prandini F, Bublot M, Le Gros F-X, Dancer A, Pizzoni L, Lamichhane C. Assessment of the immune response in broilers and pullets using two ELISA lits after in ovo or day-old vaccination with a vectored HVT+IBD vaccine (VAXXITEK HVT+IBD). Zootecnica International, September 2008;40-50.

20. Lemiere S, Wong YS, Saint-Gerand AL, Goutebroze S, le Gros FX. Compatibility of Turkey Herpesvirus–Infectious Bursal Disease Vector Vaccine with Marek’s Disease Rispens Vaccine Injected into Day-Old Pullets. Avian Dis., 2011; 55:113-118.

21. Richard-Mazet A, Goutebroze S, Duboeuf M, Le Gros FX, Lemiere S, Bublot M. Compatibility of fowlpox-avian influenza and herpesvirus of turkey-infectious bursal disease vector vaccines injected in ovo to embryonated chicken eggs. Article. XVIIth Congress of the World Veterinary Poultry Association, Cancun, Mexico, 2011; p852-857.

22. Jay ML, Bizzini S, Duboeuf M, Goutebroze S, Le-Gros FX. Compatibility of a novel vector vaccine HVT-Gumboro with Newcastle and infectious bronchitis vaccination at one day of age. Abstract. 16th congress of the World Veterinary Poultry Association, Marrakesh, Morocco, 2009; p341.

23. Lemiere S, Fernandez R, Pritchard N, Cruz-Coy J, Rojo F, Wong SY, Saint-Gerand AL, Gauthier JC, Perozo F. Concomitant Turkey Herpesvirus–Infectious Bursal Disease Vector Vaccine and Oil-Adjuvanted Inactivated Newcastle Disease Vaccine Administration: Consequences Compatibility of Turkey Herpesvirus–Infectious Bursal Disease. Avian Dis., 2011; 55:642-649.

24. Botero LA, Fernandez R, Rojo F, Orrego JC, Lemiere S. Colombian chicken meat industry performance further to the use of VAXXITEK HVT+IBD vector vaccine. Oral presentation. 16th congress of the World Veterinary Poultry Association, Marrakesh, Morocco, 2009; p169.

25. Körösi L, Povazsan J, Penzes L, Sari I. Field results of VAXXITEK HVT+IBD vaccination in coloured birds in Hungary. Poster. 16th congress of the World Veterinary Poultry Association, Marrakesh, Morocco, 2009; p339.

26. Tang SF, He SJ, Li WM, Lemiere S. Field experience of vaccination in day-old broiler chickens with a herpesvirus turkey-infectious bursal disease (HVT-IBD) vector vaccine in different systems of chicken production across China. Poster presentation. XVIIth Congress of the World Veterinary Poultry Association, Cancun, Mexico, 2011; p920-926.

27. Herrmann A, Negm H, Sultan H. Turkey herpesvirus infectious bursal disease (HVT-IBD) vector vaccine – Field experience in commercial broilers in Egypt. Article. XVIIth Congress of the World Veterinary Poultry Association, Cancun, Mexico, 2011; p556-563.

28. Ochoa R. Monitoring of safety and efficacy of a herpesvirus turkey-infectious bursal disease (HVT-IBD) in a commercial layer operation in Mexico. Article. XVIIth Congress of the World Veterinary Poultry Association, Cancun, Mexico, 2011; p770-774.

29. Korosi L, Povazsan J, Sari I, Penzes L. Comparative field study of the Vaxxitek® HVT-IBD vaccine in commercial layer flocks. Article. XVIIth Congress of the World Veterinary Poultry Association, Cancun, Mexico, 2011; p644-650.

30. Lemiere S, Rojo R, He S, Tang S, Li W, Herrmann A, Prandini F. Benefits of the Herpesvirus of Turkey vector vaccine of Infectious Bursal Disease in control of immune-depression in broilers and decrease of use of antibiotic medication. Abstract. XVIIIth Congress of the World Veterinary Poultry Association, Nantes, France, 2013; in-press.

31. Rautenschlein S, Lemiere S, Simon B, Prandini F. A comparison of the effects on the humoral and cell-mediated immunity between an HVT-IBD vector vaccine and an IBDV immune complex vaccine after in ovo vaccination of commercial broilers. Article. XVIIth Congress of the World Vet.

32. Lemiere S, Bublot M, de Saint-Vis B, Le-Gros FX, Dancer A, Bollart A, Carlotti A. Validation of VAXXITEK HVT+IBD vaccine intake in chickens using vHVT13-specifi c qPCR by processing different tissue samples. Oral presentation. 16th congress of the World Veterinary Poultry Association, Marrakesh, Morocco, 2009; p165.

33. Rautenschlein S, Simon B, Jung A, Pöppel M, Prandini F, Lemiere S. Protective efficacy of VAXXITEK HVT + IBD in commercial layers and broilers against challenge with very virulent infectious bursal disease virus. 16th congress of the World Veterinary Poultry Association, Marrakesh, Morocco, 2009.

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