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    Home > Medical News > Latest Medical News > Trace the source of the Nanjing epidemic to lock it!

    Trace the source of the Nanjing epidemic to lock it!

    • Last Update: 2021-08-04
    • Source: Internet
    • Author: User
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    Chinanews client, Beijing, July 31 (Zhang Yilin) ​​The Nanjing epidemic has continued to attract public opinion.


    Since the beginning of this year, sporadic epidemics have appeared in many places, and a term has also continuously entered the public eye-"Delta strain"


    Delta is making waves all over the world

    Delta is making waves all over the world

    On July 30, at a press conference on the epidemic in Nanjing, Ding Jie, deputy director of the Nanjing Centers for Disease Control and Prevention, introduced that the current round of the epidemic in Nanjing was in the same transmission chain, and the source of the epidemic was the inbound flight of Russia CA910 on July 10


    Because of the Nanjing epidemic, the term "delta strain", a term that often appears in international news, has begun to become a topic of discussion among the domestic people


    The delta strain was first discovered in India in October last year.


    This strain has new characteristics such as strong virus transmission, better adaptation to the human body, fast replication, high body load, slow conversion of patients, long treatment time, and prone to severe illness


    According to the World Health Organization, "Delta strain is the most powerful new coronavirus mutation discovered so far


    How "poisonous" is Delta?

    How "poisonous" is Delta?

    In fact, the Nanjing epidemic is not the first time that China has confronted Delta head-on


    For example, from May to July this year, the delta mutant strain caused epidemics in Guangzhou, Shenzhen, Dongguan and other places


    In Ruili, Yunnan, the sequencing results of 7 positive samples of the new coronavirus tested in July this year also showed that the genome sequence is highly homologous to the Delta mutant


    How "poisonous" is Delta? Feng Zijian, a researcher at the Chinese Center for Disease Control and Prevention, once said that from the Guangzhou epidemic, the infectivity and transmission ability of the delta virus variant strain has been significantly enhanced, and the incubation period or generation interval has been shortened, and it has been transmitted for five or six generations in just 10 days


    In June this year, Chinese Academy of Engineering academician Zhong Nanshan was so vividly described: "As long as in the same space with the patient in the four days before the onset of the same unit, the same building are considered as close contacts"


    academician

    The spread of Delta is also supported by international data


    According to the global epidemic analysis released by the World Health Organization on the 20th of this month, it is expected that Delta will become a major global epidemic strain in the next few months


    It has a "very atypical" feature

    It has a "very atypical" feature

    According to Zhong Nanshan's analysis, the Delta strain has a high viral load.


    In addition, the nucleic acid turns negative for a long time, and the patient is infected with a common virus strain, and the nucleic acid test turns negative after 7 to 9 days after treatment.
    However, among more than 100 patients in Guangdong before this, the average time to turn negative was 13 to 15 days, which is almost high.
    Doubled
    .

    In addition to the virus itself, patients with the delta strain have another important feature: the symptoms are extremely atypical
    .

    "After the delta strain infection in Nanjing, the early symptoms may only be fatigue, or dysosmia, or mild muscle soreness
    .
    Therefore, its symptoms are very atypical
    .
    " The State Council Joint Prevention and Control Mechanism Comprehensive Group Jiangsu Work Introduction by Qiu Haibo, an expert in the medical treatment team, vice president of Southeast University, and an expert in critical care medicine
    .

    State Council

    Based on this characteristic, Qiu Haibo specially reminded that it is precisely because of the extremely atypical symptoms that people should pay attention to their health in time while wearing masks, washing hands frequently, and gathering less
    .

    Will the vaccine still work against Delta?

    Will the vaccine still work against Delta?

    After the outbreak in Nanjing, Yang Yi, director of the Department of Critical Care Medicine, Zhongda Hospital of Southeast University, revealed in an interview with the media on the 22nd of this month that most of the confirmed cases in this round of the epidemic in Nanjing had been vaccinated
    .

    So, is the vaccine we vaccinated against the mutant virus?

    According to experts, the answer to this question is still clear: the vaccine is still effective, and vaccination is urgent
    .

    Regarding the Nanjing epidemic, Yang Yi said that the overall symptoms of the vaccinated cases were relatively mild, the probability of turning into a severe case was significantly lower, and the course of the disease was relatively short
    .
    It shows that vaccination still has a protective effect
    .

    Zhong Nanshan also stated in June that common domestic vaccines are effective against delta mutant strains, and that everyone should speed up the pace of "receiving everything
    .
    " He mentioned that in the spread of the delta strain, the main and critically ill patients are mostly the elderly, and there are also children.
    These two groups of people should be vaccinated
    .

    On July 29th, Yang Xiaoming, chairman of Sinopharm Group China Biotech, told the media that through the laboratory, the serum of the immune population formed after inoculation of the China Biotech New Coronary Inactivated Vaccine will be crossed with multiple new coronavirus variants sweeping the world.
    And experiments, it was found that the Chinese biological new crown inactivated vaccine can achieve cross-neutralization against four typical variant strains including the Delta strain.
    In other words, the Chinese biological new crown inactivated vaccine can still provide effective protection
    .

    Yang Guang, Chief Commercial Officer of Kexing Biotech, also stated that Kexing Biotech has also conducted neutralizing antibody experiments on the sera of Kexing vaccinators with different variants, and has seen significant effects
    .
    (Finish)

    Focus on the new crown pneumonia epidemic
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