In the three eastern provinces, a new crown super-spreader appeared, and disease control experts explained the characteristics of "super-transmission"

In this nine cold days, the cold and freezing three provinces, Liaoning Dalian, Heilongjiang, Jilin Tonghua and other places have appeared local outbreaks, and even a person infected dozens of people super spreader.
the source of these outbreaks? What is the path of transmission of the virus? What are the characteristics? What reminders did you give us? At the end of 2020 and the beginning of 2021, extreme cold weather has been ushered in in all parts of the North.
this winter, it's colder than usual.
is in this cold winter, Beijing, Hebei, The East three provinces and other places have appeared in the new crown pneumonia outbreak.
Feng Zijian, deputy director of the China Center for Disease Control and Prevention, said: "At first the input of people is the main goal of our prevention and control, and later found that many outbreaks are not brought in by people, the virus in the cold chain system survival, import after the contact process people were infected, further causing the outbreak."
in Shanghai, a suitcase containing luggage on an airplane was contaminated.
cold since the beginning of winter, increasing the likelihood of long-term survival of the new coronavirus.
, once taken advantage of, it can spread like a ghost in such a cold environment.
is very secretive, especially in this round of outbreaks in the Northeast.
wu Zunyou, chief epidemiologist at the Centers for Disease Control and Prevention in China, said: "The northeast environment is like a big refrigerator, minus 20 degrees Celsius, low temperature is more suitable for the survival of the virus."
virus lurks in the cold and spreads in the crowd.
in the Northeast, asymptomatic infection is an important way to spread.
december 2020, a dock porter in Dalian was thy-30s.
and the source of the outbreak was five dock loaders infected with the new coronavirus, all of them initially asymptomatically infected.
Wu Zunyou said: "There are three main aspects of this secrecy, there is a certain proportion of infected people asymptomatic, from infection to full recovery process without any symptoms;
for these three reasons, the virus could not be detected in time early in the outbreak, and the virus had spread to a certain extent when it was discovered.
" Dalian outbreak, through the activities of dock workers in the shopping malls caused infection, and through infected merchants and customers, triggering a follow-up spread, resulting in a local cluster outbreak.
if the secrecy allows the virus to unknowingly take advantage of people, then the relaxation of awareness of prevention allows the virus to spread on a larger scale.
a year of anti-epidemic, epidemic prevention, so that some people have psychological fatigue, the effective control of the epidemic for a period of time in the country, but also let some people have a relaxed mentality.
, however, once the new coronavirus flows in from abroad, it can cause local outbreaks when people's consciousness is lax and they lack prevention.
the first case of the new crown virus found in Wangkui County, Heilongjiang Province, Wang, is not Wangkui County's "zero" patients, but at all levels of government, a virus transmission network is shocking.
Wang's father was soon found to be asymptomatic, and it is worth noting that Wang's father attended two weddings in Lulen County on December 29 and 30, 2020, respectively.
the wedding ceremony, there is also a couple from Jilin Changchun to attend the wedding, this is later reported in Changchun, a couple of asymptomatic infected couples, the three also took a car back to Wangkui County.
, it is not yet possible to determine whether they were on their way to the wedding or were infected at the wedding.
but gathering, or gathering, larger gathering, lack of self-prevention awareness of the aggregation has become the main reason for the subsequent local outbreak.
Wu Zunyou said: "One is in a fixed place, like family aggregation, a family of many people, and even the whole family occurred, called family gathering, and there is a kind of activities called gathering, such as holding wedding banquets in the countryside, attending wedding banquets among all people, more infected people, the risk of transmission increased, which is the main cause of the cluster outbreak."
" Wang a father's home in the countryside, when ten days later Wang a local government "should be checked" prevention and control measures were detected positive for the virus, Wangkui County Huisa village at that time there were 45 villagers tested as asymptomatic infection.
city of Yanhua city to implement the emergency closure control of Wangkui County, all community villages closed management.
, the monitoring system is not as dense and sensitive as the urban deployment, " said Wu Zunyou, a spokesman for the Monitoring Group.
the agricultural leisure season is a special season with more aggregation activities, it is more likely to cause the spread of the epidemic.
when it was discovered, it had been spreading in secret for some time.
" lack of awareness of the gathering activities, leading to the outbreak in the Northeast in individual areas concentrated outbreaks, and the lack of prevention awareness of the movement of personnel, has become an important reason for the expansion of the scope of the Northeast epidemic, and even led to the emergence of super-transmission phenomenon.
this outbreak in Wangkui County, and it didn't end after the local outbreak.
, who were diagnosed as asymptomatic after the wedding, drove back to Wangkui County with Wang's father after attending the wedding.
January 5, the couple returned to Changchun on the K350 train from Wangkui County.
K350 train is a train that travels through the three eastern provinces, and in the cold winter, the closed carriages once again become a place where the virus spreads in secret.
The same carriage, a man Lin a car from the South Fork Station, a couple from Harbin West Station, and the couple from Huanhua Wangkui County, were later diagnosed as asymptomatic infected.
, especially Lin, who got on the bus from the South Fork Station, became a super spreader in the future.
January 5 to Harbin, Heilongjiang Province, January 7 to Jilin Changchun and Princess Ling City, January 8 returned to Harbin Shuangcheng City, January 9 to Jilin Tonghua City, Lin in just a few days, many times to and from several cities, until January 12 Tonghua City for Heilongjiang Province pushed Lin a close contact information, immediately tracked this person and tested positive for nucleic acid, the results of non-symptomatic infection.
, although the authorities tracked it quickly, it was too late.
Lin is a product salesman.
January 8, in Princess Ling City, a health hall teaching, January 10 to 11, in Tonghua City, a living room teaching, have led to a large number of elderly people infected, the number of infected continued to increase, the two places to participate in the lecture staff has 101 people infected, the current Tonghua City reported that the infected people are directly or indirectly related to it.
according to the Tonghua Health Committee on January 28, as of January 27 at 24 hours, the imported epidemic Tonghua City reported a cumulative total of 211 confirmed cases, asymptomatic infection of 81 cases.
cold winters, confined indoor environments, dense listeners, and once someone is infected with the new coronavirus, everyone in the confined environment is at risk, and the outbreak occurs.
wangkui county this wave of outbreaks in the early days mainly in rural and county towns.
medical conditions in rural areas are weak, it is difficult to detect early, and once the outbreak is detected, unified isolation, comprehensive screening work is also very difficult.
this characteristic is also more obvious in the northeast of this round of epidemic prevention and control.
the rural areas of the Northeast at this time, nucleic acid sampling, transshipment and detection is very difficult.
province of Heilongjiang province in order to control the outbreak in the shortest possible time, mobilized the province's disease control and medical human resources to support the nucleic acid testing work.
, in view of the characteristics of freezing cold and sparsely populated areas, a large number of mobile and mobile nucleic acid testing laboratories have been mobilized to enhance the mobility of epidemic prevention and control.
to February 5, to ensure that no omissions, timely detection, has completed six rounds of full nucleic acid testing.
Last year, when the outbreak was violent, everyone was very careful: wash your hands less and go out, wear a mask with public chopsticks, all kinds of epidemic prevention measures are honest implementation, so we can get through the most difficult time together.
with the outbreak into the normal stage of prevention and control, many people gradually relaxed their vigilance, there are preventive measures, health habits gradually left behind.
the outbreak has not passed, the cold day is easier to survive the virus, encountered the crowd awareness slack, lack of prevention, it is likely to cause a local outbreak.
for the cunning new crown virus, we can not be taken lightly, together, all to take the initiative to take protective measures to stop its spread.
is both responsible for oneself and more for society.
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