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Related Experiment Videos

Group A rotavirus veterinary vaccines

L J Saif1, F M Fernandez

  • 1Food Animal Research Program, Ohio Agricultural Research and Development Center, The Ohio State University, Wooster, USA.

The Journal of Infectious Diseases
|September 1, 1996
PubMed
Summary

Maternal rotavirus vaccination strategies aim to protect livestock and poultry from diarrhea. Genetically engineered rotavirus-like particle vaccines show promise for boosting immunity via colostrum.

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Area of Science:

  • Veterinary immunology
  • Virology
  • Animal health

Background:

  • Group A rotaviruses cause significant diarrhea in young livestock and poultry.
  • Current vaccination strategies focus on inducing active or passive immunity.
  • Gnotobiotic pigs and calves are valuable models for evaluating rotavirus vaccine efficacy.

Purpose of the Study:

  • To evaluate the efficacy of rotavirus vaccines in livestock.
  • To explore strategies for overcoming limitations of oral rotavirus vaccines in the presence of maternal antibodies.
  • To assess the potential of maternal rotavirus vaccination and novel subunit vaccines.

Main Methods:

  • Utilizing gnotobiotic pigs and calves as animal models.
  • Investigating the impact of colostral antibodies on vaccine efficacy.
  • Examining maternal rotavirus vaccination strategies to enhance lactogenic immunity.
  • Evaluating genetically engineered rotavirus-like particle vaccines.

Main Results:

  • Live attenuated rotavirus vaccines showed limited efficacy in field trials due to inhibition by colostral antibodies.
  • Maternal rotavirus vaccination aims to boost passive antibody transfer to neonates.
  • Success of maternal vaccines is influenced by various factors including vaccine properties and environmental exposure.
  • Rotavirus-like particle vaccines in cows show promise for boosting mammary antibodies.

Conclusions:

  • Colostral antibodies pose a challenge for oral rotavirus vaccine efficacy in young animals.
  • Maternal vaccination strategies are crucial for conferring passive immunity.
  • Genetically engineered rotavirus-like particle subunit vaccines offer potential advantages over existing rotavirus vaccines.

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