What is sequential immunity?Which groups can receive sequential booster immunization?The authority replied

2022-08-31 0 By

Under the joint prevention and control mechanism of The State Council, a press conference was held on February 19 to introduce epidemic prevention and control and vaccination work.What is the current situation of the epidemic in China?What is sequential immunity?Which groups can receive sequential booster immunization?Join us?What is the current situation of the epidemic in China?The epidemic situation in Baise, Guangxi is in the phase of winding down.The new cases in Huludao, Liaoning province, were mainly detected through centralized isolation screening, indicating a positive trend and the risk of social transmission basically under control.At present, the heihe epidemic is mainly concentrated in Heihe City, with multiple transmission chains. Further tracing of the source and case investigation are being carried out in an orderly manner.Clusters of imported cases have recently occurred in Shenzhen, Zhuhai and Dongguan in Guangdong province. The omicron epidemic in Shenzhen has been basically under control, and the epidemic in Dongguan and Zhuhai is being strengthened to trace the source of the epidemic to prevent the spread of the epidemic.Wenshan, Honghe and Ruili in Yunnan province have been hit one after another, with the source of infection still unknown. Local authorities are making all-out efforts to speed up nucleic acid screening in key areas and identify risk sources to prevent the spread of the epidemic from border areas to the inland.The genetic sequencing results of the outbreak in Suzhou, Jiangsu province showed that the omicron mutant was a local epidemic caused by a new imported source, which is still in a rapid development stage.Local authorities are speeding up efforts to trace the source of the epidemic, expanding nucleic acid screening in risk areas, and strengthening screening of people in key places to prevent the further spread of the epidemic.The genetic sequencing results of the Hohhot outbreak in Inner Mongolia show that the Delta mutant strain is a local epidemic caused by a new imported source, which has affected Baotou city in Inner Mongolia.At present, the epidemic is in an early stage, with the number of cases increasing rapidly and clusters of cases occurring in crowded places such as work units and wedding banquets. There is a high risk of community transmission and spillover. The sources of risk and key places need to be identified as soon as possible to understand the scope of the epidemic.At present, working groups dispatched by the Joint Prevention and control Mechanism under The State Council have been working with local governments in Liaoning, Inner Mongolia and Guangdong to deal with clusters of cases and guide the implementation of various measures.What is sequential immunity?Sequential immunization is an immunization strategy adopted by different technical routes of vaccines according to a certain time interval and dose, in order to further improve the preventive effect, while considering the safety.A single vaccine is usually sufficient for a common, easily treatable virus or disease, but for viruses that are highly variable and difficult to deal with, sequential immunization is often used.There are two main purposes: one is that different vaccines can complement each other with their advantages; the other is that individuals with different constitutions may have more side effects on a certain type of vaccine, so that changing a vaccine can avoid side effects.Recently, with the approval of the Joint prevention and control mechanism of The State Council, the NHC has started to deploy sequential strengthening of immunization.Which groups can receive sequential booster immunization?In this sequence, the first is the population over the age of 18, and the second is the completion of two doses of the novel Coronavirus inactivated vaccine produced by Sinopharm Beijing, Sinopharm Beijing and Sinopharm Wuhan.Three is to complete 2 doses of vaccination, sequential enhanced immunization interval should not be shorter than 6 months.Fourth, there is no enhanced immunity, that is, the third injection did not hit.Previously, target people over 18 years old who had been vaccinated with inactivated vaccines from Sinopac Beijing, Wuhan and Sinovac Beijing, as well as adenovirus vector vaccines from Tianjin Concino for six months could receive a single dose of secondary homologous booster immunization, that is, a booster dose of the original vaccine.After the implementation of the sequential enhanced immunization strategy, the target population that has completed the whole vaccination of the three inactivated vaccines mentioned above can also choose the recombinant protein vaccine of Zhiphirongoma or the adenovirus vector vaccine of Concino for sequential enhanced immunization.For the target population, either homologous booster or sequential booster immunization can be selected.Research data show that homologous immunization and sequential immunization can further improve the immunization effect, and it is hoped that the population meeting the vaccination conditions can take the initiative to vaccinate and vaccinate early.What are the characteristics of omicron cases?First, it’s more infectious and spreads faster.The average intergenerational interval between cases of Omicron infection is three days, further shortening the time of about four days for the Delta variant, and it is about twice as transmissible as the Delta variant.Second, the symptoms of omicron infection are less typical and therefore more insidious during transmission.From the perspective of clinical manifestations, the infection of omicron strain is similar to the upper respiratory tract infection caused by other viruses, and lacks specific manifestations, making it difficult to make clinical differential diagnosis, and the transmission of the virus becomes more insidient.Third, the cases are mainly mild and common, and the symptoms are relatively mild. The main clinical manifestations are cough, sore throat, fever, etc. Some patients have nasal congestion, runny nose, fatigue, headache and other symptoms.In addition, the patient’s radiographic changes were not typical.Overall, the proportion of severe cases is not very high.But because it spreads quickly, once it spreads among people, it may lead to a run on medical resources.At present, omicron variant strain has become the dominant strain imported from abroad and the local epidemic in China, with stronger transmission power and faster transmission speed.The risk of imported and homegrown outbreaks in China has increased significantly.What is the capacity of Novel Coronavirus nucleic acid detection in China?What are the rates?The overall capability of novel Coronavirus nucleic acid detection is strong in China.Up to now, there are 12,277 institutions in China capable of carrying out novel Coronavirus nucleic acid tests, both in traditional fixed laboratories and mobile laboratories such as shelters, air film and testing vehicles. The total number of single-tube tests has reached 45.55 million people per day.If the 10-in-1 or 20-in-1 mixed sample detection method is adopted, the detection capacity and efficiency will be further improved.At present, all provinces have determined and publicized the list of institutions providing nucleic acid testing services 24 hours a day.As for the price of nucleic acid tests, public medical institutions follow the pricing standard of medical service items.According to incomplete statistics, the average cost of novel Coronavirus nucleic acid test for a single person in public medical institutions in 31 provinces (autonomous regions and municipalities) in China is about 39 YUAN, and the average cost of hybrid coronavirus nucleic acid test for multiple people is less than 10 yuan.”Local epidemic Prevention and control Policies and Measures” query service The State Council client mini program launched the “Local epidemic prevention and control policies and measures” query service, which is provided by the joint prevention and control mechanism of 31 provinces (autonomous regions and municipalities directly under the Central Government) and Xinjiang Production and Construction Corps.The latest prevention and control policies and measures are under control.Check before you go out, it’s necessary!Source | Gov.cn editor | Sesame – END –