According to data released by the National Health Commission, as of April 9, 31 provinces (autonomous regions and municipalities directly under the Central Government) and the Xinjiang Production and Construction Corps have reported a cumulative total of 3.295 billion doses of COVID-19 vaccine, of which more than 224 million people over the age of 60 have been vaccinated against the new crown virus. The reporter learned that advanced age, underlying diseases and non-vaccination are all high-risk factors for severe illness and death after infection with the new crown virus, and the data show that the incidence of adverse reactions after vaccination in the elderly is lower than that of young people. Therefore, experts call on eligible elderly people to be vaccinated against the new crown virus as soon as possible, complete the full vaccination as soon as possible and strengthen immunization.
Vaccination against COVID-19 throughout
The risk of severe illness and death can be reduced by more than 90%.
At the recent press conference of the joint prevention and control mechanism of the State Council, Wang Huaqing, chief expert of the immunization program of the Chinese Center for Disease Control and Prevention, introduced that studies have shown that after receiving the whole new crown virus vaccine, the risk of severe illness and death can be reduced by more than 90%, "Of course, serious adverse reactions will occur in the process of vaccination, but this serious adverse reaction is very rare, and the probability of occurrence is about one in a million." It is reported that from the analysis of the results of the current monitoring, the incidence of adverse reactions in the elderly over 60 years old is lower than that of other age groups.
Wang Huaqing also introduced another set of data: data from designated hospitals in high-prevalence areas of China show that the proportion of severe and critically ill COVID-19 patients who receive two doses of the new crown virus vaccine is only about 15%. He said that after contracting COVID-19, the three risk factors for severe illness and death are: advanced age, underlying disease and lack of vaccination. "In fact, in addition to being highly contagious and fast in spreading, the Aumecreon variant also has a hidden transmission process, which has led to a possible increase in the risk of infection in the later stage." For the elderly and people with underlying medical conditions, the best measure to reduce severe illness and death is to get vaccinated. Vaccination has moved us forward to reduce severe illness and death, and vaccination has played a role in preventing severe illness and preventing death. ”
After vaccination against COVID-19
Adverse effects in the elderly are smaller than in younger groups
At present, more than 200 million elderly people in the mainland have completed the full vaccination of the new crown virus vaccine, and there are more than 100 years old people at home and abroad, and a large number of vaccination examples confirm that the new crown virus vaccine used in the mainland is safe in the elderly group, "In fact, the monitoring results show that after receiving the new crown virus vaccine, the adverse reactions of the elderly are smaller than those of the young group." Zhang Chunhuan, deputy director of the Immunization Planning Department of the Guangzhou Municipal Center for Disease Control and Prevention, said.
Why is this contrary to the general perception? Zhang Chunhuan introduced that this can also be used to use the principle of immunology for scientific explanation, first of all, from the principle of adverse reactions: "Adverse reactions that occur after vaccination, such as transient fever, head fever, general discomfort, muscle pain, local redness and swelling inoculated, etc., are actually basically a manifestation of the body's defense function. Because when the vaccine is injected into the muscle, the body's immune function will recognize the vaccine as a 'foreign substance', the local immune cells of the muscle immediately start the congenital immunity (also called innate immunity), the immune cells secrete a large number of cytokines and other active substances, promote the formation of specific immunity (the production of protective antibodies, etc.), this process may appear vascular permeability enhancement, secreted immune effect substances may stimulate local nociceptors, resulting in local redness, swelling, pain; and when these substances enter the blood, it will cause fever, Systemic symptoms such as general malaise. In fact, it is the embodiment of the body's immune function to play a defensive role. ”
The elderly population has fewer adverse reactions, which may be related to the slow decline of the immune function of the elderly and the response to the vaccine is not so strong, "which also shows that the immune function of the elderly is worse and needs to be actively prevented through vaccination." Another reason is that older people may be more tolerant of fever, local pain at the vaccination site, etc.
After vaccination
Be sure to stay on site for 30 minutes
At the same time, Zhang Chunhuan also instructed the elderly that after vaccination, they must stay on the spot for 30 minutes, so that in case of acute allergic reactions, they can also get treatment in time; after returning home, try to maintain good life behavior, fever, redness and swelling at the vaccination site and other discomforts may occur within 1 to 3 days after vaccination, generally once transient, 1 to 3 days can be recovered, if these symptoms or some other symptoms last longer, or gradually aggravate, you should seek medical treatment in time. In addition, special health monitoring should also be done within 1 month after vaccination, "allergic reactions to vaccines are divided into acute and late-onset types, and late-onset types may appear as antibody levels in the body increase." Antibody levels in the body generally peak at 2 to 4 weeks after vaccination, so 1 month of monitoring time is sufficient. ”
He reminded the majority of the elderly that the symptoms of suspected adverse reactions after the vaccine are clinically treated with symptomatic treatment. Therefore, if the body has special symptoms after vaccination, do not think too much about whether it is caused by vaccines, and should report to the vaccination unit after timely treatment; as long as the adverse reactions of vaccines are treated in time, the prognosis is relatively good.
Text, video/Guangzhou Daily, Xinhuacheng Reporter: Wu Ling
Photo/ Guangzhou Daily client infographic
Video Clip/Guangzhou Daily New Flower City Editor: Li Jin
Guangzhou Daily New Flower City Editor: Lin Jing