echemi logo
Product
  • Product
  • Supplier
  • Inquiry
    Home > Biochemistry News > Biotechnology News > Zhong Nanshan: This winter's flu virus strain is mainly type B.

    Zhong Nanshan: This winter's flu virus strain is mainly type B.

    • Last Update: 2020-08-14
    • Source: Internet
    • Author: User
    Search more information of high quality chemicals, good prices and reliable suppliers, visit www.echemi.com
    Since the beginning of the winter, one side is the flu epidemic, the other side is the PM2.5 explosion. What are the characteristics of
    this wave of influenza? Is there a rumored virus mutation? What are the harms of air pollution to human health? On January 17th, at the public welfare health forum of "Winter Respiratory Disease Prevention" in Guangzhou, science and technology daily reporters interviewed Zhong Nanshan, a member of the Chinese Academy of Engineering and a well-known respiratory disease expert.
    no significant variation of influenza B virus", the current north-south hospital detected influenza-like cases show that the prevalence of influenza in the same period in the past month has increased nearly 1-fold, and the prevalence of the dominant strain is mainly type B.
    " Zhong Nanshan said that the virus's performance characteristics are, easy to infect, the duration of the disease is longer, there is a fever, in the south may have systemic soreness symptoms, but the north and south is not very different.
    the vast majority of people are mainly mild and rarely cause severe or fatal cases.
    according to the national influenza sentinel hospital test results show that the current influenza virus positive detection rate of up to 40%, mainly B type.
    "flu viruses are always erratic and constantly evolving to escape host immune attacks."
    may cause antigen drift due to the accumulation of mutations in the surface of the virus antigen, or it may cause antigen transition strain caused by the virus carrying a new type of influenza virus into the human body.
    " Zhong Nanshan said, but since April 2017, China's prevalence of A (H3N2), H1N1, B influenza virus has not significantly mutated, the epidemic strain and the northern hemisphere recommended 2017-2018 vaccine strain matching better.
    he pointed out that the terrible is the combination of avian influenza and human influenza, which deserves high attention.
    should be particularly alert to the occurrence and spread of avian influenza in the first three months of this year. "I expect the flu to be in the closing stages by the end of the month, "
    .
    influenza is still a threat that we can't predict, and no virus or pathogen is evolving as quickly as the flu virus.
    flu, immunization is the most effective way to prevent it.
    " Zhong Nanshan called for the country to pay attention to influenza vaccination.
    the vaccination rate in western countries is close to 30%, for the elderly, children, health care workers and other special groups are 100% full coverage, while China's current immunization rate of only 1%.
    "Sanchina vaccine is now used for the three-valent influenza vaccine, does not contain B antigen, although the wave of influenza is not very effective, but the prevention of other types of influenza effect is good.
    in March, Guangzhou will enter the influenza A-type flu mainstream flu season.
    ", he revealed that research and development agencies are stepping up research and development to produce a four-price influenza vaccine, which is likely to go on sale in the second half of the year.
    for every 10 micrograms of PM2.5 increase, the risk of lung cancer increases by 7.4% in winter with more severe air pollution. On January 11,
    , Beijing issued an "orange alert for heavy air pollution", and on the 12th and 17th, the air quality of some cities reached "6 levels of serious pollution" in Jinluyu, Beijing, Tianjin, And Luyu.
    " air pollution significantly increases the risk of hospitalization and mortality in patients with chronic obstructive pulmonary disease.
    " Zhong Nanshan pointed out that high concentrations of PM exposure were highly correlated with increased prevalence of chronic pulmonary obstruction and decreased lung function.
    he and his team from 2012 to 2015, selected four places in Guangdong' Shaoguan, Heyuan, Guangzhou, Zhanjiang four places to study, after observation found that PM2.5 from 35 micrograms per cubic meter to 75 micrograms, the risk factor of COPD disease increased 2.4 times;
    this data has been used by the World Health Organization.
    statistics show that lung cancer ranks first among the top 10 malignant tumors in China, accounting for nearly 22%.
    "PM2.5 increased by 10 micrograms per cubic meter, lung capacity decreased by 28 milliliters, and the overall risk of lung cancer increased by 7.4%.
    " Zhong Nanshan said with concern, "Early life exposure to atmospheric pollutants also increases the risk of asthma attacks in childhood."
    the number of mothers who are pregnant and their children born in a more polluted place increases their risk of developing asthma attacks by more than 40% when they grow up.
    " from a personal level, measures to protect against air pollution should be strengthened.
    PM2.5 to 75 micrograms, children, the elderly and people with cardiovascular and respiratory diseases should stay indoors and avoid strong physical activity, and the public should avoid outdoor activities.
    ," Zhong Nanshan stressed.
    .
    This article is an English version of an article which is originally in the Chinese language on echemi.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to service@echemi.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

    Contact Us

    The source of this page with content of products and services is from Internet, which doesn't represent ECHEMI's opinion. If you have any queries, please write to service@echemi.com. It will be replied within 5 days.

    Moreover, if you find any instances of plagiarism from the page, please send email to service@echemi.com with relevant evidence.