Open Access

Recent development of oral vaccines (Review)

  • Authors:
    • Ying Liu
    • Dominic Man-Kit Lam
    • Mei Luan
    • Wenfu Zheng
    • Hao Ai
  • View Affiliations

  • Published online on: March 22, 2024     https://doi.org/10.3892/etm.2024.12511
  • Article Number: 223
  • Copyright: © Liu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Oral immunization can elicit an effective immune response and immune tolerance to specific antigens. When compared with the traditional injection route, delivering antigens via the gastrointestinal mucosa offers superior immune effects and compliance, as well as simplicity and convenience, making it a more optimal route for immunization. At present, various oral vaccine delivery systems exist. Certain modified bacteria, such as Salmonella, Escherichia coli and particularly Lactobacillus, are considered promising carriers for oral vaccines. These carriers can significantly enhance immunization efficiency by actively replicating in the intestinal tract following oral administration. The present review provided a discussion of the main mechanisms of oral immunity and the research progress made in the field of oral vaccines. Additionally, it introduced the advantages and disadvantages of the currently more commonly administered injectable COVID‑19 vaccines, alongside the latest advancements in this area. Furthermore, recent developments in oral vaccines are summarized, and their potential benefits and side effects are discussed.
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May-2024
Volume 27 Issue 5

Print ISSN: 1792-0981
Online ISSN:1792-1015

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Copy and paste a formatted citation
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Spandidos Publications style
Liu Y, Lam D, Luan M, Zheng W and Ai H: Recent development of oral vaccines (Review). Exp Ther Med 27: 223, 2024
APA
Liu, Y., Lam, D., Luan, M., Zheng, W., & Ai, H. (2024). Recent development of oral vaccines (Review). Experimental and Therapeutic Medicine, 27, 223. https://doi.org/10.3892/etm.2024.12511
MLA
Liu, Y., Lam, D., Luan, M., Zheng, W., Ai, H."Recent development of oral vaccines (Review)". Experimental and Therapeutic Medicine 27.5 (2024): 223.
Chicago
Liu, Y., Lam, D., Luan, M., Zheng, W., Ai, H."Recent development of oral vaccines (Review)". Experimental and Therapeutic Medicine 27, no. 5 (2024): 223. https://doi.org/10.3892/etm.2024.12511