This week, the number of newly diagnosed cases in Nanjing dropped to 0 to 2 cases every day, and many regions adjusted back to low risk
Why does "Delta" spread so fast?
Why does "Delta" spread so fast? The ferocious "Delta" mutant strain makes the coming summer season especially anxious
State Council Shanghai epidemic prevention and control leading group members of the Group of Fudan University Shanghai Medical College, Vice President Wu Fan: Why is this such a big crowd will have to expand? One problem is that it was discovered late.
Dean More than two months ago, the "Delta" mutant strain caused an epidemic in Guangzhou, but this is the first time that it has swept across the country on a large scale
Shanghai epidemic prevention and control leading group members of the Group of Fudan University Shanghai Medical College, Vice President Wu Fan: Although the vaccine is not hundred percent block the infection, but it can effectively reduce the proportion of severe, this point is very important
Dean According to statistics, the Nanjing Airport transmission chain, which has the greatest impact on this round of the epidemic, has affected at least 29 cities in 13 provinces in the mainland
Ding Jie, deputy director of the Nanjing Centers for Disease Control and Prevention: After investigation, it was found that cleaning staff participated in the cleaning work of CA910 flight.
CA910, an international flight from Russia, had previously been blown out by the Civil Aviation Administration of China ten times due to confirmed cases overseas
Epidemic prevention and control leading group members of the Group of Shanghai Fudan University Shanghai Medical College, Vice President Wu Fan: spread of the virus, if you are in a traffic hub, that is, all of a sudden can be brought to the country, but this band is not certain Regularity, there are totally some accidental factors, that is, all our measures must be implemented under the condition of normalization
Dean At present, international flights and cargo transportation have become the most important way for mutated virus strains to sneak into our country.
Han Guangzu, Deputy Director of the Flight Standards Department of the Civil Aviation Administration: Encrypt the frequency of nucleic acid testing for all front-line staff.
In the context of the prevention and control of internal defense rebound and external defense import, land ports and airport customs have become high-risk places, and of course they are also key places for prevention and control
Precise prevention and control, only fast and not broken
Precise prevention and control, only fast and not broken In summer, airtight protective clothing, double gloves, N95 masks, and goggles are all essential
academicianZhong Nanshan, Academician of theChinese Academy of Engineering , Director of the National Respiratory Diseases Clinical Medicine Research Center: We usually say that close contacts are family members.
academician In May, the experience of China’s first encounter with "Delta" provides a reference sample for other cities in China today
Shanghai epidemic prevention and control leading group members of the Group of Fudan University Shanghai Medical College, Vice President Wu Fan: Delta or not with the original virus, there is a fundamental change in the nature, it is consistent with the original, but it It is a virus with stronger transmission capacity.
All the effective measures we used before are applicable
.
In view of the strong dissemination power, it reminds us that you must not have loopholes.
Once there are loopholes, you may take advantage of this loophole
.
Dean In addition, as a member of the expert group of the epidemic prevention and control leading group affected by this round of the epidemic, Wu Fan believes that when an epidemic occurs, the prevention and control work can be detected early and quickly controlled, and it may take the lead in the confrontation with the epidemic.
Machine
.
Shanghai epidemic prevention and control leading group members of the Group of Fudan University Shanghai Medical College, Vice President Wu Fan: So I have to participate in the process of epidemic prevention and control of these, the most important word, one early and one is fast
.
You have already decided how many people you have just now, and when the number of people he contacts has not increased exponentially, you should find out the high-risk close connections and sub-close connections that are involved
.
The other is fast.
In all epidemic handling processes, work is done in hours, which means that a small area is discovered at the earliest, and then the people involved are managed as quickly as possible, with minimal social cost.
, The smallest social impact to deal with this epidemic
.
Dean During the "Delta" attack, a confirmed case in Shanghai was driving a vehicle driven by a foreign airline's freighter crew in a closed-loop transport at the airport.
Due to vaccinations and other reasons, his close contact has not been infected and there is no new local infection
.
As of this Friday, Shanghai has one medium-risk area and no high-risk areas
.
The epidemic that originally appeared in transportation hubs and may affect more people has been eliminated in a short time
.
However, not every city and region has the advantages of Shanghai's economy and talents.
To achieve an early and rapid response to the epidemic in more regions, Wu Fan suggested that localities can adapt to local conditions and integrate social and economic aspects to build a stronger public Work hard on the health system and effective normalized epidemic prevention and control mechanisms
.
Shanghai epidemic prevention and control leading group members of the Group of Fudan University Shanghai Medical College, Vice President Wu Fan: Today is the "Delta", tomorrow it could be anything else, you do not have a fleeting thought, I quickly put this thing to get It's over, and I will end it once it is cleared.
As long as the world is not cleared, this matter will not be over, and your measures can be firmly implemented
.
This kind of work is tiresome, and we can do it.
If we can do it all, I think our life can still show a normal state, what it is like, the meeting, the travel
.
Dean In China, the vaccine is being vaccinated rapidly, and in this week, more than 1.
8 billion doses have been taken
.
But the delta strain is indeed breaking through the line of defense of the vaccine
.
On August 2, a medical institution in Pudong, Shanghai reported that a foreign airline cargo service worker in the cargo area of Pudong Airport had tested positive for the new coronavirus nucleic acid.
As a high-risk group, this airport employee had been vaccinated before
.
Therefore, experts are also warning that the delta strain may subvert everyone's assumptions about the new crown epidemic.
In the face of such a strain, and there may be new mutant strains, how will the vaccine work?
In the face of mutant strains, where is the next immune barrier?
In the face of mutant strains, where is the next immune barrier? As of this Friday afternoon, a total of 1.
8 billion doses of vaccines have been vaccinated nationwide, and more than 770 million people have completed the entire vaccination process
.
However, a Shanghai crew member who has been vaccinated as a key population is still infected with the "Delta" variant strain, which has caused many people to have great doubts about whether the vaccination can resist the variant strain
.
Hu Bijie, director of the Department of Infectious Diseases, Zhongshan Hospital Affiliated to Fudan University: Last year, we had high hopes for the vaccine.
We hope that when the vaccine comes, we can remove the masks from now on
.
However, judging from the current situation, it may be too early to completely remove the mask.
This time the "Delta" mutant strain, we give it a name of breakthrough infection
.
Despite being vaccinated, it is still a breakthrough and the disease has developed.
But we can say from another perspective that if the vaccine is not vaccinated, the number of possible infections will be more.
At the same time, if the vaccine is not vaccinated, the condition may be more serious and require hospitalization.
The ratio is even greater
.
Domestic public health experts warned not long ago that as one of the countries with the best anti-epidemic effect, if the vaccination rate is not increased, it may become an immune depression and the consequences will be disastrous
.
Nowadays, from a global perspective, although the vaccination rate is high, it cannot prevent the virus 100%.
Breaking through the infection has become the norm, but the proportion is extremely small
.
Right now, Yangzhou, which is still at a high level of diagnosis, has become a place to observe the effect of vaccination
.
Statistics show that as early as the 1980s, Yangzhou took the lead in entering an aging society.
More than 70% of the confirmed patients admitted to the epidemic were over 60 years old
.
Hu Bijie, director of the Department of Infectious Diseases, Zhongshan Hospital Affiliated to Fudan University: From the period of time in Yangzhou, the proportion of severe cases has increased significantly compared with the proportion in Nanjing
.
Among this group of people, the proportion of elderly people is significantly higher than that of Nanjing, and the proportion of the second group of people who have not been vaccinated is significantly higher than that of Nanjing
.
When "Delta" harassed Guangzhou, Academician Zhong Nanshan reminded the public that all 13 severely ill patients in Guangzhou were not vaccinated.
He believes that China has an inoculation rate of over 83.
3% in order to achieve herd immunity, and the next most concerned vaccine barrier is the elderly.
Groups
.
The reporter was informed that the critically ill and critically ill patients in the Yangzhou epidemic are basically elderly people, and the coverage rate for people aged 60 and over in Yangzhou has not yet reached 40%
.
Confined to breaking through the infection cases and the concerns of the elderly or their relatives on their physical health, how to unify the voluntary vaccination and the follow-up of the elderly group requires more detailed work
.
academician Hu Bijie, director of the Department of Infectious Diseases, Zhongshan Hospital Affiliated to Fudan University: Whether our vaccine will be used or not, what risk will we take? What is its profit? We need to analyze the pros and cons
.
The main people we get vaccinated are those from 18 to 60 or 65 years old
.
Relatively speaking, the elderly have many basic diseases and are more complicated.
They are worried that some adverse reactions will occur after the vaccine is given
.
But after more than half a year, we have accumulated experience after the vaccine has been widely vaccinated.
We feel that this vaccine is quite safe.
The elderly group is the same as the young people, and his profits are very large
.
On the premise that the clinical data is absolutely safe, vaccinate the elderly with underlying diseases, and face each of them, and the informed consent and voluntariness of the person and relatives must be required
.
The reporter combed and found that vaccination for the elderly has been rolled out in many provinces
.
In March of this year, Shanghai launched the vaccination program for people aged 60 and above.
The age range for the first phase of the campaign was set at 60 to 75.
According to the city’s disease control related personnel, considering that the older the age, the side effects of underlying diseases will also increase.
, Work needs to be very cautious, and vaccination should be carried out according to the specific physical conditions of each elderly person
.
Hu Bijie, director of the Department of Infectious Diseases, Zhongshan Hospital Affiliated to Fudan University: Adults, then the elderly, and now children, not to mention small children, first from the age of 12 to 17, and if it is safe, go down
.
We in China are very cautious about the promotion of the entire vaccine.
We will not blindly push it all at once without relevant clinical data
.
According to the expert's immunization plan, people between the ages of 18 and 60 should take all of them, and the elderly and underage groups will naturally be protected
.
However, the smallest confirmed patient in the Yangzhou epidemic is only 15 months old, and the characteristics of community-based and family-aggregated infections are obvious.
How to do a good job of vaccinating the elderly with care, more carefully study the underage vaccination, how to promote the whole population vaccination, and become the current epidemic prevention and control The focus
.
Through the summer vacation, inoculation of minors in many places is also being carried out, and the principles of inoculation by age group are also followed
.
At the same time, people who have been vaccinated for a period of time are also concerned about whether they need to be given booster shots when faced with constantly mutating strains
.
Hu Bijie, director of the Department of Infectious Diseases, Zhongshan Hospital Affiliated to Fudan University: Over time, its antibody levels will decline
.
Since we have a breakthrough infection, we can reduce the occurrence of breakthrough infections by strengthening needles, but there are still few data in this area.
We are considering strengthening needles from the level of experts and scientists
.
This Friday, the National Health Commission concluded that the national epidemic risk is generally controllable
.
Experts said that this provides an opportunity for us to concentrate on increasing the vaccination rate.
At the same time, we must keep our vaccination thinking open.
For example, in addition to supplementary vaccination, whether we can mix different vaccines, and increase vaccination options as soon as possible, are all important public issues.
Realistic meaning
.
Recently, research and development of vaccines against variant strains that are good for epidemic prevention and control have begun at home and abroad
.
Hu Bijie, Director of the Department of Infectious Diseases, Zhongshan Hospital Affiliated to Fudan University: It is more about racing against the virus, racing against the mutation of the virus.
We hope that more brands will win, and can surpass our virus and completely solve the problem of virus mutation.
Let our people and mankind return to their normal lives two years ago
.
This week, the number of confirmed cases in Nanjing has dropped to single digits quickly, but the number of confirmed cases in Yangzhou continues to stay at a high level.
A very important reason is that an infected person falsely reported a lot of prevention and control information in Yangzhou.
.
She herself was detained under criminal law, but the price of staying was also painful! This reminds us that while individuals pay attention to prevention and control measures, they must also cooperate with the flow
.
To tell the truth, help yourself and save others
.
At the same time, from a large level, we may also think about the next prevention and control measures, which should be adhered to and which need to be changed?
Focus on the new crown pneumonia epidemic
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.
