[ad_1]
Original title: 64.98 million people received the new corona vaccine How far are we from herd immunity? Source: Science and Technology Daily
As of March 14, my country had 64.98 million vaccinations against the new coronavirus. “Our ultimate goal is that the health of all people can be effectively protected.”On March 15, the Joint Prevention and Control Mechanism of the State Council held a press conference. Li Bin, deputy director of the National Health Commission, gave a detailed introduction to promoting vaccination against the new coronavirus. So in the face of the new coronavirus that most people are susceptible to, how many people need to get vaccinated for it to disappear from the crowd?
◎ Our reporter Zhang Jiaxing
Previously, there were rumors that China’s vaccine production could encounter problems such as “vaccine bottle jam”. Is there any guarantee for the production of the China vaccine production line?
What is herd immunity? How far is it from that?
In the fight against infectious diseases, humans have eliminated smallpox and “stopped” measles, based on the herd immunity elicited by vaccination.
According to Wang Huaqing, chief expert of the immunization program at the Chinese Center for Disease Control and Prevention, the establishment of herd immunity has a lot to do with the protective efficacy of the vaccine and the rate of population coverage. To eliminate smallpox, the immunity of the population must reach about 85%, which means that 85% of people have immunity to smallpox; the more infectious measles requires that 95% of the population have immunity to block the disease.
For the new coronavirus vaccine, if you want to restore your study, work and life to a normal state, you must also form an immune barrier through the new coronavirus vaccine.
Compared to the experience of smallpox and measles, the 64.98 million people currently inoculated in my country is a good start, but there is still a lot of room for immunity.
To this end, the relevant departments are organizing the implementation of vaccination according to the principle that key populations at high risk of infection and disease transmission, high-risk populations at high risk of severe disease after infection and other populations are being promoted in order to continually increase the population’s coverage of the new coronavirus vaccine.
How effective is the new corona vaccine?
Introducing the effects of the vaccine, Li Bin said that the new coronavirus vaccines currently used in my country have been clinically studied according to specifications, have been approved by the national department of pharmaceutical regulation and have passed an identification. strict. In the process of storage and transportation of the vaccine, it is necessary to monitor and record the temperature regularly to ensure that the entire process of storage and transportation of the vaccine is carried out in the specified temperature environment and meets the relevant transportation requirements. During the vaccination process, the efficacy and safety of the vaccine are fully guaranteed through standardized operations.
“With the full development of the new coronavirus vaccination work, the number of vaccinated people continues to increase, and I think the effect of using the vaccine will be prominent. Li Bin said, I hope that more people will actively participate in vaccination work, get the vaccine as soon as possible, and witness the protective effect of the vaccine.
Is vaccine production guaranteed?
“From the currently completed inoculation tasks, the production capacity of domestic companies has better met current supply needs. At the same time, we have received a good response to foreign aid and exports, and supported international demand.” A member of the party group of the Ministry of Industry and Information Technology, Chief Engineer Tian Yulong said.
Domestic vaccine manufacturers are reportedly still expanding, and as production capacity continues to be released, production will gradually increase. This represents the advantages of China’s institutional advantages, industrial mobilization capabilities and high-efficiency organization capabilities of enterprises. During the Spring Festival, vaccine companies worked overtime and ran against time to organize production at full capacity.
“According to the current production plan, we have established a dynamic guarantee balance mechanism for production supply and demand. Through accurate measurement of inoculation demand and step-by-step implementation, production guarantees and supply can be precisely connected, “said Tian Yulong.
Is the supply of vaccine materials stable?
A vaccine, from production to vaccination, requires raw materials, auxiliary materials and packaging materials, as well as cold chain equipment for the circulation and transport of the vaccine, and necessary equipment for vaccination.
Previously, there were rumors that China’s vaccine production could encounter problems such as “vaccine bottle jam”. Can China vaccine production and production line be guaranteed?
According to Tian Yulong, the Ministry of Industry and Information Technology accumulated good experience in protecting medical supplies last year, making full use of the integrity, mobilization, organization and emergency dispatch capabilities of my country’s industrial system to establish a downstream industrial chain of materials.
Regarding the vaccine production chain, the Ministry of Industry and Information Technology has carried out key programming in the production, procurement and supply of materials. At present, China’s production system is complete and complete, and the supply of raw materials for vaccine production is orderly, stable and sufficient, which can meet the current and future needs of large-scale vaccine production. .
Regarding the supply chain, the Ministry of Industry and Information Technology and the relevant departments have established a good and efficient coupling mechanism to ensure that all links of production, inspection, transportation and use are orderly, efficient, smooth. and insurance.
Does the batch issuance capacity meet the demand?
The Vaccine Management Law of my country clearly stipulates that vaccines marketed in my country must be subject to batch release management in accordance with the law, that is, each batch of marketed vaccines must be reviewed and inspected by an agency inspection of batch issuance recognized at national level.
So what is the current batch issuance capacity of inspection agencies and can they meet the demand for a large number of vaccines in the market?
According to Yuan Lin, Director of the Department of Drug Supervision of the State Food and Drug Administration, the State Food and Drug Administration has already implemented stepwise and stepwise measures to further increase and accelerate the building of inspection and batch capacity. of biological products. Institutions. At present, including national-level drug inspection institutions, provincial-level drug inspection institutions such as Beijing, Hubei, and Guangdong are fully equipped with the ability to inspect and batch issue new coronavirus vaccines. At the same time, the drug regulatory department is actively promoting the capacity-building of other relevant provincial-level drug inspection bodies. More than a dozen provincial-level inspection bodies are expected to soon have vaccine inspection and batch issuance capabilities.
“To actively cooperate with the continuous expansion of my country’s new coronavirus vaccine production capacity, we require inspection agencies to harness the potential and improve efficiency within the inspection agency under the premise of ensure quality and implement ‘three synchronization’ with the company, that is, inspection agency inspection and company legal self-inspection Simultaneous start, simultaneous progress and simultaneous completion have greatly shortened the cycle of the market for the new coronavirus vaccine, “said Yuan Lin.
