There is no difference between Beijing Kexing and Kexing Zhongwei vaccines. The vaccines of Beijing Kexing and Beijing Kexing Zhongwei are the same, and the vaccines of Beijing Kexing and Beijing Kexing ZhongCOVID-19 are the same, but everyone has different abbreviations for them.

But Kexing Zhongwei and Beijing Kexing are not the same company. According to public information, Kexing Zhongwei was established in Beijing on May 7, 2009, and its legal representative is Yin Weidong. The company's business scope includes the research and development of biological vaccine technology; Diagnostic kit technology, providing technical services, etc. , a subsidiary of Kexing Holding Biotechnology Co., Ltd. ..

Vaccine principle

Vaccine is an active immune preparation made of pathogenic microorganisms (such as bacteria, rickettsia, viruses, etc.) to prevent infectious diseases. ) and its metabolites are artificially attenuated, inactivated or genetically modified.

The vaccine retains the characteristics that pathogenic bacteria stimulate the immune system of animals. When animals come into contact with this harmless pathogen, the immune system will produce certain protective substances, such as immune hormones, active physiological substances and special antibodies. When animals come into contact with this pathogen again, the animal's immune system will follow the original memory and produce more protective substances to prevent the harm of pathogens.