China News Service, January 31. Xu Wenbo, director of the Institute for Viral Disease Control and Prevention of the China Centers for Disease Control and Prevention, stated at a press conference held on the 31st of the Joint Prevention and Control Mechanism of the State Council that asymptomatic infections have a certain degree of infectivity. Since they have not yet developed symptoms, An asymptomatic infected person does not know that he will infect other people, and those who contact him will also be at risk. If it is discovered later, it will easily cause a cluster of epidemics or cause community transmission, that is, hidden transmission.
Data map: Passengers waiting to go home.
Photo by China News Agency reporter Zhai Yujia
On January 31, the Joint Prevention and Control Mechanism of the State Council held a press conference on the epidemic prevention and control situation during the Chinese New Year and the Spring Festival.
At the meeting, a reporter asked questions and said that recently, judging from the epidemic situation in Hebei and Heilongjiang, the number of asymptomatic infections has increased and this has caused hidden transmission.
What is the reason for this phenomenon?
How should people protect?
Xu Wenbo introduced that there are two situations for asymptomatic infections: one is the asymptomatic infection in the incubation period, and the second is the asymptomatic infection.
Currently, asymptomatic infections are mainly screened in four aspects.
One is the cluster epidemic investigation; the second is the tracking investigation of the source of infection; the third is the testing of close contacts; the fourth is the large-scale nucleic acid screening.
In this way, some early asymptomatic infections who have not yet developed symptoms, some in the incubation period, and some have been asymptomatic.
Xu Wenbo pointed out that recently, my country has reported a large number of asymptomatic infections, mainly because my country's borders have moved forward and the ability to detect cases has increased. The main measures are to actively detect cases, so that many cases are detected within the incubation period.
In addition, many places have shortened the time interval of nucleic acid testing during epidemic control, and increased the number of nucleic acid tests. This has also led to more early or lower levels of infection to be screened, so many of these infected people are In an asymptomatic state.
Regarding how to protect the public, Xu Wenbo made relevant recommendations and adopted the following measures: unnecessary reductions to reduce travel to overseas and domestic high-risk areas, and reduce the risk of infection.
The second is to maintain social distancing, minimize gatherings, gatherings and other crowd activities. If you have fever, cough and other cold-like symptoms, you must consciously maintain social distancing with other people, try to avoid going out, and seek medical attention in time.
During the treatment, you must protect the whole process and wear a mask.
The third is to wear a mask in public places and when taking public transportation, and must pay attention to personal protective measures such as hand hygiene.
Fourth, if there is contact or indirect contact with people infected with COVID-19, they must promptly accept COVID-19 nucleic acid testing, cooperate with standardized sampling, actively cooperate with COVID-19-related prevention and control measures, and organize nucleic acid testing in accordance with relevant regulations of communities and units.
Xu Wenbo also pointed out that at present, most areas in my country are in low-risk areas. For asymptomatic infections discovered through various channels, medical isolation and observation measures have been taken in a timely manner.
Early detection of cases is the key to avoiding the spread of the epidemic, and early detection of cases also requires everyone's cooperation. People must take daily personal protection. If symptoms or suspicious symptoms such as fever occur, they must actively cooperate with epidemic prevention measures.
In response to the recent exposure of infected persons or asymptomatic infections on many trains, Xu Wenbo said that first of all, it is recommended that everyone does not need to move during the Spring Festival holiday.
Regardless of whether it is mobile or not, personal protection must be done. If you want to return to your hometown, you must plan your travel in advance, pay attention to the changes in the destination epidemic situation and the policy measures for epidemic prevention and control, and pay more attention to the travel reminders of the transportation department.
If there is no suspicious symptoms such as fever and respiratory tract infection, you can return home normally. If you have suspicious symptoms, it is recommended to rest at home and seek medical treatment.
Xu Wenbo also mentioned that on the way back home, if you take a private car back home, you must do a good job of ventilating the private car, and the passengers should wear masks when getting off the car and entering public places. After returning to the car, it is recommended to use hand disinfectant first. Disinfect hands.
If a person travelling in a private car develops suspicious symptoms, the person in the car must take personal protection, open the windows for ventilation, and disinfect the surface of the objects, such as the door handle, steering wheel, window, windshield, and seat Contact each other during the itinerary. After arriving at the destination, people with suspicious symptoms should seek medical treatment in time, and the private car should also undergo terminal disinfection.
If you return home by public transportation, you must wear a medical surgical mask correctly throughout the journey, minimize the number and time of removing the mask due to meals, and change the mask according to the length of time.
Secondly, public transportation should cooperate with the staff at the site and wharf to do various prevention and control measures such as health monitoring, isolation, and information registration. When waiting in line, pay attention to maintaining social distancing, a safe distance of 1 meter, and try not to get together with other waiting passengers. .
In addition, keep your hands clean, don't touch them everywhere, follow respiratory etiquette, cough or sneeze must be covered with elbows or tissues, and maintain a certain social distance when talking with others.
In addition, if suspicious symptoms such as fever and cough occur during public transportation journeys, you should contact the staff in time, keep wearing a mask, and go to the designated isolation area to rest. After reaching the destination, those with suspicious symptoms should go to the designated medical institution in time.
Other passengers in the same vehicle must leave contact information for follow-up at any time.
After returning home, we must implement various prevention and control measures in accordance with local prevention and control requirements, and reduce visits and gatherings.