This study dealt with the issue of civil liability for damages from medical vaccines and the Corona vaccine (Covid-19) in the Omani legislation and comparative law. Doing things, or falling under the responsibility of the producer for his defective products, and based on our research on the mechanism of redress for this damage. The research problem of this study highlights the adequacy of the legal regulation of civil liability in Omani and comparative law for vaccine damages, and are these harms considered among the risks of scientific progress or not? In addition, what this may entail from determining who is responsible for these damages, the mechanism for redressing the damage, and the means of relieving the official from this responsibility, if any. This study has been divided into two chapters. The first chapter dealt with the basis of civil liability for vaccine damages, including determining the basis of liability, whether responsibility for personal actions or responsibility for doing things, or the responsibility of the producer for his defective products. As for the second chapter, it was devoted to dealing with mechanisms of compensation for vaccine damages. Moreover, the means of pushing it and the researcher has followed the comparative analytical method in this study.