What is asymptomatic infected person ?
Simply put,
means that the patient carries the new coronavirus
but does not occur, there are no obvious symptoms
I don’t know that I have new coronavirus
2
Is asymptomatic?
What is the difference between the two?
nucleic acid test result is positive
There are clinical symptoms, such as fever, cough, etc.
There are imaging changes in the lungs
There are no clinical symptoms, there are imaging changes in the lungs
no clinical symptoms
pulmonary imaging did not change
Asymptomatic infected people conducted blood routine , CT imaging examination and antibody test during centralized isolation and medical observation. If relevant symptoms or signs appear in the subsequent situation and meet the diagnostic criteria for confirmed cases, they will be revised to a confirmed case within 24 hours.
The following situations
Asymptomatic infected persons can be diagnosed as confirmed cases
∨
1. Asymptomatic infected persons have tested positive for nucleic acid and have begun to show symptoms;
2. After observing for a period of time, patients with asymptomatic infections have symptoms such as cough, fever, and fatigue;
3. Asymptomatic infections have no clinical symptoms, but there are lesions in the lung CT examination.
3
Will asymptomatic infected persons infect others?
Asymptomatic means that the infected person has no symptoms
is not without contagious
and asymptomatic transmission routes for infected persons
and asymptomatic transmission routes for infected persons
html l0 is the same as confirmed cases.specifically includes:
direct transmission, aerosol transmission and contact transmission
∨
✓ Directly spread
The droplets that infected people sneeze, cough, and talk, and the exhaled gas is directly inhaled from close range to cause infection;
✓ Aerosol spread
droplets are mixed in the air to form aerosol , which causes infection after inhalation;
✓ Contact spread
droplets are deposited on the surface of the item. After contacting the contaminated hands, they contact the mucosa of the mouth, nose, eyes, etc., resulting in infection.
So
For asymptomatic infected people,
Also, close contacts and secondary close contacts should be screened
and high-risk people screening and corresponding place control measures
4
How to find out?
Since asymptomatic infected people
has no obvious symptoms and signs
Then how did
find that they were infected with the new coronavirus?
is usually tracked through
1. Close contacts of confirmed patients
. Nucleic acid screening of key personnel found
Asymptomatic infections found
usually have 2 situations
⑴
① patients are in the incubation period, especially in the middle and late stages of the incubation period, and are found to be positive for nucleic acid;
② patients have mild symptoms and have healed themselves. During the recovery period, they were found to be positive for antibodies or positive for nucleic acid.
5
Why are there so many asymptomatic infections in this epidemic?
①
is related to Omickron mutant strain
The new coronavirus continues to mutate, with strong transmission, but its pathogenicity is declining, so the symptoms caused by the Omickron mutant strain are relatively mild.
②
related to large-scale immunization
With the immunization of large-scale populations, vaccination has played a very important role in protecting the majority of susceptible people. The rate of severe illness and mortality after infection is decreasing, and the proportion of mild or asymptomatic symptoms is increasing.
③
is related to early detection and control
disease control and early rapid screening of health systems, so that some early infections were discovered before they showed clinical symptoms.
④
is related to the immunity of infected objects
is related to the immunity of infected objects. Asymptomatic conditions are more likely to occur among young people. What proportion of
6
Asymptomatic infected people will become a confirmed case?
At present, it is not possible to know exactly what proportion of asymptomatic infections will become confirmed, but it is certain that the mutant strain is different, and the proportion of asymptomatic infections is also different .
At present, it seems that the probability of the delta mutant invading the lower respiratory tract is high, the probability of the Omickron mutant invading the upper respiratory tract is high, and the symptoms of infection with the upper respiratory tract of are even milder. Compared with the
, the proportion of asymptomatic infections in the Omickron variant is relatively high.
7
Asymptomatic infected people need treatment?
At present, asymptomatic infected persons does not require special treatment .
If the future antiviral small molecule drugs are on the market, they may be used for asymptomatic infections. What the infected person needs to do is to fully rest and recover as soon as possible.
8
How long will it take for asymptomatic infected people to turn negative?
Asymptomatic infections in Omickron According to current clinical treatment experience, the time for turning negative is not essentially different from that of mild and ordinary patients. is generally about two weeks . However, it is not ruled out that some infected people will turn negative in 6 to 7 days.
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Asymptomatic infections increase in the number of
How to protect yourself?
PART
1
Wear a mask
Be sure to wear a mask when going out or in public places, and parents should also let their children wear masks.
PART
2
Washing
Hand washing
Hand washing Three elements: First soap, wash the second for 20 seconds, and wash the third running water.
When transferring, if you take public transportation and go into the office or go home, you have to wash your hands, you have to wash your hands after going to the toilet, you have to wash your hands after taking the express delivery, and you have to wash your hands when you touch something in public places. This should become a conscious habit in our daily life.
PART
3
Home protection
Pay attention to maintaining good personal and environmental sanitation, open windows in the room frequently and ventilate frequently, and do not share towels for family members. Keep furniture, tableware clean, etc.
Balanced nutrition, moderate exercise, adequate rest, avoid excessive fatigue, go out less, and do not gather.
Source: Basic public health service project publicity platform
