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COVID-19's "Poison King" Delta strain is coming! It is called "Poison King" because compared with old COVID-19, the new Delta strain has four particularities.

First, the viral load is high. The load of Delta virus is 1260 times of that of COVID-19 virus strain prevalent last year.

Second, the exhaled virus has a high concentration. Outsiders may be infected as long as they have short contact with infected people.

Third, it is highly contagious. In the past, a case was infected in the bathroom for only 14 seconds, which made it difficult to prevent.

Fourth, the external symptoms of infected people are not strong, the proportion of fever after infection with Delta virus is very low, and the symptoms of patients are atypical. Early symptoms may only be fatigue, olfactory dysfunction or mild muscle soreness, and one-third to one-half of patients may have no symptoms and should not be prevented.

Due to the particularity of the "poison king", the previous concept of preventing close contact has become outdated. The current concept of close contacts has four characteristics: the same space, the same unit, the same building, and four days before onset. In Nanjing, someone was infected after chatting with infected patients 10 minutes. The youngest confirmed patient is only 8 months old and the oldest is 80 years old. It can be said that it covers almost all ages. Therefore, none of us can despise and ignore it.

Some people think that they have been vaccinated against COVID-19, so they are lucky if they are immune to the virus. This is also wrong.

People have a misunderstanding about vaccines, that is, they think that if they are vaccinated, they will not get this infectious disease. In fact, the protective effect of vaccines is graded. The first layer is anti-infection, which can protect the vaccinators from infection. The second function is to prevent diseases, or minor diseases will not become serious or even develop to death. The third level of prevention is radiation transmission, which means that even if you are infected with the virus and have some symptoms, the amount of virus in your body is very small, and it is difficult to transmit it to others.

At present, the COVID-19 vaccine we vaccinated belongs to secondary prevention, that is, prevention of diseases, so that even if we get sick, minor diseases will not become serious. So some people will get infected after vaccination. We still can't let our guard down.

In the face of the menacing Delta virus, what should pregnant women do? Don't worry too much about pregnant mothers. If you take the following four protective measures, you can sit back and relax.

First of all, the diet must be disinfected at high temperature.

Because COVID-19 is not resistant to high temperature, pregnant mothers should thoroughly cook before eating. Don't eat raw food or any game.

Second, try not to stay in complicated places. This time, the Delta COVID-19 has the characteristics of rapid spread and strong toxicity. In order to prevent infection, pregnant women, especially those in the third trimester, had better not go out and stay in complicated places. It is even more important to avoid traveling to high-risk areas and visiting relatives and friends.

Third, insist on wearing a mask.

Pregnant women should choose qualified medical masks, preferably medical surgical masks and N95 masks. If you feel that your breathing is not smooth, don't give up the mask protection.

Some hard-working pregnant women are reluctant to change their masks for several days, which is also wrong. Masks should be replaced regularly to prevent pollution. Special masks for pregnant women should be used alone, and should not be mixed with family members and children.

4. Pay attention to personal hygiene and home protection and cleaning.

Pregnant women should do their own protective cleaning, including washing hands and disinfection after going out, changing clothes, and telling their family members living together to do the same.