Well-known experts said that after the first wave of infection peak passes, a certain herd immunity effect will be achieved. The prerequisite is that no new mutant strains are generated. After the current round of infection peak passes, will herd immunity be achieved? Experts say herd immunity will be achieved to a certain extent.
In the face of the new crown , can herd immunity really be achieved?
The concept of herd immunity refers to the resistance of a population or livestock group to infection. A high level of herd immunity means a high percentage of the population is resistant to infection.
Because the possibility of a disease epidemic not only depends on the number of individuals with resistance in the group, but also is related to the frequency of contact between individuals in the group.
However, due to the time difference between the peaks of infection in various places, the time of decline will not be exactly the same. At the same time, Wang Guiqiang also pointed out that if new mutant strains appear, they may break through this immune barrier . The mutant strains are like waves, causing people to be infected one after another. After being infected with B1, they will be infected with B5, B7 or the latest variant of the next generation of new coronavirus.
Will it get worse if you are infected with COVID-19 again?
new coronavirus usually refers to new coronavirus infection . There is currently no clear investigation and data to show that second or multiple infections with new coronavirus will cause more severe symptoms.
If a person is infected with the new coronavirus multiple times, the symptoms will generally become lighter and lighter after the first infection. However, depending on the virus subtype, each person's symptoms will be very different, so it cannot be generalized.
How long does it take to develop antibodies after being infected with COVID-19?
" secondary infection " means that the new coronavirus infection has completely recovered this time, but a second new coronavirus infection occurs. The secondary infection is usually symptomatic, and the Ct value of the nucleic acid is also relatively low. has a high viral load and is contagious.
In the early days of full liberalization, many people were infected with the new coronavirus. As the situation progressed in the past few days, people's symptoms have also improved, and many people's nucleic acid tests have turned negative.
It takes 15 days after the "Yang Kang" turns negative to complete the entire test cycle. At this stage, the body's immune system is recovering and requires special protection.
Antibodies slowly decrease, and it will take about 2 to 3 months to drop to a lower level. At this time, the risk of infection will be great, so you should strengthen your self-prevention measures 2 to 3 months after you turn from positive to negative.
Do I still need to get vaccine after being infected?
Is it necessary to get vaccinated again after being infected with the new coronavirus? The new coronavirus vaccine depends on the situation. If you recover well and the body detects the presence of new coronavirus antibodies, you can choose not to vaccinate. If there are no antibodies in the body, it is recommended to get vaccinated. People who have recovered from the new coronavirus infection in the past can receive a dose of the new coronavirus vaccine after 6 months after being fully informed.
What to pay attention to before and after taking the new crown vaccine:
- Fasting
Before taking the new crown vaccine, you must first avoid fasting. Taking the new crown vaccine on an empty stomach will cause gastrointestinal reactions in the recipient, such as vomiting, nausea and other uncomfortable symptoms.
- You must stay at the site for 30 minutes and see if there is no abnormality before leaving. If you have a high fever or continue to feel uncomfortable after returning home, you must report to the vaccination point and seek medical treatment in time.
- Do not take a bath for 24 hours after receiving the COVID-19 vaccine
Drink more boiled water and eat a light diet; do not drink alcohol, strong tea, coffee, eggs, seafood and other allergenic foods and spicy foods within a week.
- Do not mix the vaccine with
. It cannot be mixed with the new coronavirus inactivated vaccines from other manufacturers such as Beijing Biotech and Beijing Sinovac Zhongwei, nor with the Anhui Zhifei recombinant new coronavirus vaccine (CHO cell).
