Extension: Phnom Penh protector
When it comes to COVID-19 vaccine, the personal health code will be added with a layer of Phnom Penh. Therefore, many netizens will say that after vaccination, there is already a Phnom Penh protector. There is actually a vaccine protector! ?
Related information:
Vaccine refers to biological products made of various pathogenic microorganisms for preventive inoculation. Among them, vaccines made of bacteria or spirochetes are also called vaccines. Vaccines are divided into live vaccines and dead vaccines. Commonly used live vaccines include BCG, polio vaccine, measles vaccine and plague vaccine. Commonly used dead vaccines include pertussis vaccine, typhoid vaccine, meningococcal vaccine and cholera vaccine.
The production time of different vaccines is different, and some vaccines may take 22 months to produce a batch. The development of vaccine is a long and complicated process with high cost. Vaccination is the most economical and effective public health intervention measure to prevent and control infectious diseases, and it is also an effective means for families to reduce the incidence of diseases and medical expenses.