What is the chance that a sub close contact will be infected?

Close contacts.

There is no way to give a specific value for the probability of infection, which is mainly related to the contact time, contact method, whether it is protected, immunization, etc.

1. Contact time.

In general, the shorter the time spent in close contact, the lower the chance of infection. If close contact occurs for a long time, it increases the chance of infection.

2. Contact mode.

Handshakes, hugs, and conversations are less likely to be infected than kissing, sleeping, and eating together.

3. Whether it is protected.

Whether you have taken the necessary protective measures, such as wearing a mask, hand sanitization, etc. If there is no protective measure, the chance of getting infected is high.

4. Immunization.

If you have been vaccinated before, you have better preventive immunity and are less likely to be infected than those who have not been vaccinated.

Under normal circumstances, sub-close contacts refer to close contacts of patients with novel coronavirus pneumonia, and the probability of infection of sub-close contacts is not large, but the specific number is uncertain.

Novel coronavirus pneumonia is a kind of lung inflammation caused by novel coronavirus infection, which is contagious, and the main transmission routes are droplet transmission and contact transmission. Close contacts refer to those who have been in close contact with a confirmed patient with novel coronavirus pneumonia and have not taken effective protective measures. Sub-close contacts are those who have been in close contact with close contacts and have not taken effective protective measures.

The probability of infection in sub-close contacts of the novel coronavirus pneumonia is relatively small, but there is no accurate data to support the specific amount. Although the chance of infection of sub-close contacts is relatively small, it is not completely impossible to be infected, and it is still necessary to strictly abide by local epidemic prevention policies and do a good job of protection in daily life.

After being infected with the novel coronavirus pneumonia, symptoms such as fever, fatigue, and dry cough may occur, and in severe cases, symptoms such as dyspnea and heart failure may occur, and even life-threatening.

Close contacts.

The chance of infection depends on a variety of factors such as the time of contact with the virus, the degree of self-immunity, and whether there are protective measures, and the shorter the exposure time to the virus, the stronger the autoimmunity, and the appropriate protective measures, the lower the chance of infection. Therefore, during the special period, you should avoid going to crowded places as soon as possible, wear masks correctly when going out, disinfect your hands in time, and do a good job of strict protection to greatly reduce the probability of infection.

If it is a sub-close contact of a person infected with a new coronavirus variant, the probability of infection is very high, because the new coronavirus variant, such as the Delta strain, is very transmissible, as long as you stay in the same space or building, you may be infected.

The probability of being infected is also very high, because the new coronavirus is also very contagious and can be transmitted through direct or indirect contact, but it is slightly weaker than the contagiousness of the mutant strain.

Dangerous.

Assuming that the case or asymptomatic infected person is A, the person who has been in close contact without taking effective protective measures is a close contact, which we call B. A person who has been in close contact with B without taking effective protective measures is a secondary close contact.

According to the relevant provisions of the Novel Coronavirus Pneumonia Prevention and Control Plan (Eighth Edition), close contacts will be subject to 14-day centralized isolation medical observation, with a nucleic acid test on the 14th and 14th days during this period, daily health monitoring for 7 days after the isolation is lifted, and a nucleic acid test on the 2nd and 7th days.

Precautions for sub-close contacts.

Those who have been in contact with suspected people but are currently asymptomatic are close contacts and should be strictly under medical observation. Based on the current epidemiological investigation, the incubation period of the novel coronavirus is generally 3-7 days, and the longest is not more than 14 days. Therefore, such people should be observed at home for 14 days, and at the same time, they need to be observed for fever, fatigue, dry cough, nasal congestion, runny nose, diarrhea and other symptoms.

If you have respiratory symptoms, fever, chills, fatigue, diarrhea, conjunctival hyperemia and other symptoms, you need to seek medical attention in time. You should wear a mask on the way to the doctor, and do not take public transportation or walk to avoid infecting others.

Summary. The isolation and control time of close contacts and sub-close contacts is calculated from the date of the last contact with the case (subject to the time of close contact and sub-close contact provided by the epidemiological investigation), and centralized isolation is implemented for 21 days, and after three negative nucleic acid tests are taken, they will be transferred to home isolation for 7 days, and after the nucleic acid test is negative again, the isolation will be lifted.

The isolation time of close contact and sub-dense rock high-contact personnel is calculated from the date of the last contact case (subject to the time of close contact coarse hunger and sub-close contact provided by the epidemiological investigation), and centralized isolation is implemented for 21 days, and after three negative nucleic acid tests are taken, they will be transferred to home and isolated for 7 days, and the isolation will be released after the nucleic acid test is negative again.

The quarantine time of close contacts is calculated from the date of their last contact with the patient and they are subject to 14 days of medical observation, while the time of centralized isolation of sub-close contacts is calculated from the date of their last contact with the close contact.

Summary. Pro, sub-close contacts are infected by 3 people, the probability of infection of sub-close contacts is generally about 30%, and the probability of being infected by ordinary new coronavirus infected people is also relatively large, because the new crown virus is more contagious and can be transmitted through direct or indirect contact, but this virus is slightly less contagious than the mutant virus strain. If it is a new crown virus such as Omicron or Delta, that is, the private contacts of the mutant virus infected person, the probability of infection will be relatively large, generally around 60% or 70%, and the transmission speed of the mutant virus is also relatively fast, and healthy people will be infected through droplet transmission or airborne transmission.

Pro, sub-close contacts are infected by 3 people, the probability of infection of sub-close contacts is generally about 30%, and the probability of being infected by ordinary new coronavirus infected people is also relatively large, because the new crown virus is more contagious and can be transmitted through direct or indirect contact, but this virus is slightly less contagious than the mutant virus strain. If it is a new crown virus such as Omicron or Delta, that is, the private contacts of the mutant virus infected person, the probability of infection will be relatively large, generally around 60% or 70%, and the spread rate of the mutant disease will also be relatively fast, and it will infect healthy people through droplet transmission or airborne transmission.

The 12 zodiac signs, also known as the zodiac, are 12 animals in China that match the year of birth with the 12 earthly branches, including the rat, the ox, the tiger, the rabbit, the dragon, the snake, the horse, the sheep, the monkey, the rooster, the dog, and the pig. The origin of the zodiac is related to animal worship. According to the Qin Jian unearthed from Yunmeng Sleeping Tiger Land in Hubei Province and Fangmatan in Tianshui, Gansu Province, it can be seen that there was a relatively complete zodiac system in the pre-Qin period.

The earliest hand-me-down document that records the same 12 zodiac signs as in modern times is Wang Chong's "On Balance" in the Eastern Han Dynasty.

Yes withClose contacts. There has been possible contact or activity at the same time and within the same range.

It is indirect contact, also called sub-close contact. Close contacts refer to suspected cases.

and confirmed cases started 4 days before the onset of symptoms, or asymptomatic infections.

Persons who have not taken effective precautions within 1 meter of the specimen collection from 4 days before the sampling of the specimen will be identified as close contacts.

Medical personnel, family members, or other persons who have similar close contacts, such as visiting patients or staying in a closed environment, and the treatment, care, and visits of other patients' wards and their accompanying persons. Close contacts of the same car, including in-car caregivers, passengers in the same car (family members, colleagues, friends, etc.) or other passengers and crew members who have been found to be close contacts or asymptomatic infections after investigation and assessment.

1 It depends on the infectivity of the virus you are exposed to.

If you are a close contact of the new coronavirus variant, such as Delta virus, Omicron and other mutant strains, the probability of infection is relatively large, because these mutant strains are relatively transmissible, and they may only stay in the same space or building, and they may be infected.

If you are pretended to be a sub-close contact by an ordinary new coronavirus, you may also be infected, because this type of virus is still relatively contagious, but slightly less contagious than the mutant new crown variant.

27-day centralized quarantine.

Sub-close contacts refer to those who live and live with close contacts, work in the same closed environment, have meals and entertainment for the first time, but have not taken effective protective measures.

Usually, sub-close contacts will need to be quarantined for 7 days, and if the nucleic acid test results are negative within 7 days, and the nucleic acid test of the close contacts who have been in contact with them will also be negative, they can be contacted and isolated.

3 generally 7 to 14 days or so.

The new coronavirus has an incubation period, and if it is still in the incubation period, it cannot be detected, but most people will be detected within 7 to 14 days, and some people will take 20 to 30 days to be detected by the first guess.

It is recommended to carry out centralized isolation and observation in time after becoming a sub-close contact, if there are no symptoms during the isolation period, do not take it lightly, continue to closely observe the physical state, and seek medical attention in time if there are fever, fatigue, diarrhea and other uncomfortable symptoms**.

4. Those who meet special circumstances can apply for home isolation.

If the sub-close contacts meet the following special circumstances that cannot be centrally isolated, they can apply for home isolation if they meet the relevant conditions, such as children aged 14 and below, pregnant women, people with underlying diseases, semi-self-care and inability to take care of themselves, and other four categories of people who are not suitable for living alone.

You can apply to the epidemic prevention and control staff, provide relevant certificates, and then after strict evaluation and approval by medical experts, you can switch to home isolation and observation.

The confirmed rate of sub-close contacts is usually related to the infectivity of the virus they are exposed to, and if the virus is highly contagious, the contact is in poor health, and they have not been vaccinated, the probability of being diagnosed may be high. Is it necessary to buy commercial insurance?

1. Sub-close contacts of those infected with the delta virus in the nuclear group. If you are a sub-close contact of a person infected with a new coronavirus variant, the probability of infection is also very high. Because the new coronavirus variants, such as the Delta strain, are very transmissible, as long as they stay in the same space or building, they can be infected.

2. The probability of being infected is also very high. Because the new coronavirus is very contagious, it can be transmitted through direct or indirect contact with the brother's elimination. It's just slightly weaker than the variant strain is contagious.

If you are a sub-close contact of someone infected with other infectious diseases, such as chickenpox, chidenitis or Mycobacterium tuberculosis, the probability of infection is relatively small.

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