This was originally a reunion of family members, a reunion of affection, but no one expected that this reunion turned into a viral carnival.
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February 3-5, the Furong District and Yuhua District CDC in Changsha City received three reports from two different hospitals. A total of 7 people were infected with the novel coronavirus outbreak. After the Centers for Disease Control and Prevention in the two districts, they found that these 7 people were actually a big family of three families living in the same building.
Who is the source of infection? How does the virus go through the door? Are there any other infected persons not found? A series of problems have been placed in front of the epidemiological investigation experts of the Centers for Disease Control and Prevention. They have eliminated the interference information and carefully tracked it, and finally solved the mystery of the spread of the virus by asymptomatic infected people.
onset
2 On February 1, Mr. Tang, who lives in Changsha, felt unwell. Some low fever and cough. Although he has some understanding of the novel coronavirus epidemic, he has rarely contacted outsiders since the Spring Festival, so he didn't care. However, after observing at home for nearly two days, his condition did not improve, and Mr. Tang couldn't hold back any more.
Thinking of myself chatting with my sister and brother-in-law who live in the same building these days, I also had the same symptoms when I asked her brother-in-law. Both of them felt something was strange, so they made an appointment to take the bus to the general hospital for treatment early in the morning of the 3rd. In the afternoon of the same day, the hospital's examination results showed that the virus nucleic acid test was positive, and they were immediately isolated and treated in the hospital.
spread
I heard that the two were infected by the virus. Although Mr. Tang’s wife and sister did not show any symptoms, they led their children and grandsons to the hospital for nucleic acid tests for safety reasons. The results showed that Mr. Tang’s wife, son and sister were all tested positive for nucleic acid, and 5 cases of virus infection were found in a moment.
Things are not over yet. The elder brother and sister-in-law, who live in the same unit with Mr. Tang, also felt uncomfortable on January 28 and 30. They did not improve after visiting at the Community Health Service Center. On February 2, they went to the general hospital for treatment together. The nucleic acid test was positive on February 5, becoming the 6th and 7th infected person in this big family.
traceability
This is a typical family cluster epidemic. The transmission route is daily close contact, but where does the source of infection come from? Epidemiological investigation experts from the Centers for Disease Control and Prevention immediately conducted a careful and meticulous investigation into the life trajectory of all infected people.
Mr. Tang and his family recalled that Xiao Wang, the daughter-in-law of the eldest brother, was from Huanggang City, Hubei Province. On January 19, Xiao Wang, her husband Xiao Tang and her two children drove from Changsha to Huanggang City to visit relatives. On the 23rd, they returned to Changsha and brought back many local specialties and food, which they gave to their uncle and aunt's family. During the Spring Festival, they visited each other to pay New Year's greetings. The whole family was having fun together, so they did not pay attention to wearing masks.
The clear history of contact in Hubei has pointed out the direction for traceability, but what bothered the investigators is that Xiao Wang and Xiao Tang's family of four did not show any discomfort symptoms. Will it carry and spread the virus without symptoms? There are no relevant reports in China, but the disease control personnel did not give up and continued to conduct follow-up investigations.
Things changed. Late at night on February 3, her husband Xiao Tang developed symptoms such as fever, chills, sore throat and low fever, so he went to the general hospital for treatment. The results of blood routine tests and chest CT examinations were both in line with clinical diagnosis. Combined with the history of travel in Huanggang City, Hubei before the onset of the disease, he was admitted to the hospital and was diagnosed as a "suspected case of novel coronavirus pneumonia". He was admitted to the hospital and was diagnosed in the hospital isolation observation room. He was diagnosed on the 6th, becoming the first infected person in this big family but the last discovered.
Conclusion
So far, after several rounds of investigation, the experts in the epidemic investigation can finally confirm that the epidemic has caused the outbreak caused by close contact with people returning from Hubei tourism.
In order to prevent the epidemic from continuing to spread, they tracked more than 20 other close contacts in the family and 38 people on the same bus when they were on the bus with Mr. Tang. No new infected persons have been found.
Case warning:
carefully analyzed this case and learned that although the asymptomatic infected people of COVID-19 have no symptoms, they already have strong transmission power, which brings new challenges to disease prevention and control work and increases the complexity and difficulty of epidemiological investigations.
Disease control experts remind that during the epidemic, no one knows that they or others are the hidden infected person, so we must reduce the gathering of people and close contact, and must take personal protection, wash hands frequently, wear masks, ventilate more, and be hygienic. This is the simplest and most effective way to prevent the spread of the virus.
Source: Xiaoxiang Morning News
