Among them, the inactivated vaccine in the traditional vaccine, also known as the death vaccine, needs to kill the virus in a unique way and retain its antigenic efficacy. When the virus infection attacks the body again, the human immune system will immediately reflect it and play a protective and defensive role. Attenuated live vaccine is a vaccine made of virus strain, which is the same as the virus strain in relative height, but its high pathogenicity is very low and it is not pathogenic. The purpose of purifying component vaccine is to obtain the function of special proteins on the surface of pathogens and select bridge fragments with immune activity.
Genetic engineering vaccine, recombination vaccines, vector vaccine, nucleic acid vaccine, etc. In the new vaccine, the harmful genetic genes in the pathogen were deleted or corrected by genetic coding technology, and the specific antigen of the pathogen was inserted into the attenuated vector virus gene. However, immune protein can be produced immediately in vitro, and it must be propagated according to the immune protein produced in vivo by tissue cells injected into the body. But no matter what kind of vaccine, it uses the pathogen's antigenicity to promote the corresponding immune ability of human body, so as to achieve the effect of preventing infectious diseases.
What kinds of vaccines are there in novel coronavirus? Combined with the characteristics of novel coronavirus and the traditional vaccine preparation technology, China has established five scientific and technological schemes, including inactivated vaccines in traditional vaccines. Nucleic acid vaccine, protein vaccine, parainfluenza virus vector vaccine and attenuated cold virus vector vaccine are one of the new vaccines. With the support of five technical schemes here, 13 new coronary artery vaccine has entered clinical research, among which iii has four clinical studies, which are estimated to be inactivated vaccine and parainfluenza virus vector vaccine respectively.
Is COVID-19 Mutant Vaccine Still Useful? The mutated COVID-19 vaccine is still useful. The experimental data showed that the transformation rate of Wuhan strain and British strain to vaccine immune serum was 100%, and the transformation rate of South African strain was 97%. There is almost no difference in antigen level between Wuhan strain and British strain as a whole. Be careful not to stay up late, drink alcohol, eat spicy food or allergic food before injection. After vaccination, observation must be kept for 30 minutes, and the injection port should be prevented from contacting water on the day of vaccination.