Novel coronavirus vaccine is a vaccine for novel coronavirus. Up to February 25th, 20021year, four COVID-19 vaccines have been conditionally marketed in China, including three inactivated vaccines and one adenovirus vector vaccine. The general process and cycle of vaccine research and development includes two stages.
The first stage is the pre-development process of vaccine, including obtaining immunogen, immune response test, animal protection test, optimization of immunogen production process, preclinical toxicology research and so on. The second stage is the process of vaccine development and registration, including pre-clinical research, clinical application and clinical trials, and finally the vaccine can be listed. ?
Health QR code
Health codes are based on actual data and can be generated by citizens or people who have returned to work through online declaration and background audit. As an individual entering and leaving electronic certificate locally, the QR code can be declared once, which is universal in the whole city. The introduction of the health code aims to make the work of returning to work more accurate, scientific and orderly.
In the prevention and control of epidemic situation and resumption of production, health code can realize efficient personnel flow management, improve the inspection efficiency of office buildings, shopping malls, subways, railway stations and other crowded places, and avoid excessive personnel contact and gathering.