The most dangerous people are the elderly, children and pregnant women. Then first of all, we should prepare antipyretics, antitussive and expectorant drugs, medicines for sore throat, artificial tears and saline nasal spray. These are necessities. Pregnant women and children should listen to the doctor before taking medicine. You can't take allergic drugs, and you can't take reactive drugs. The most common antipyretic for children is ibuprofen. The recommended dosage of ibuprofen for children is 10 mg per kilogram of body weight, once every 6-8 hours, and no more than 3 times a day. Be sure not to eat too much and use medicine reasonably. Women are not advised to take ibuprofen during pregnancy, which may increase the risk of complications, including miscarriage. And children had better not use cough medicine and expectorant medicine, which is harmful to children. If 1 or more children are infected, you can give them honey first, and be sure to drink plenty of water. Drinking more water is beneficial to the discharge of toxins. If infected, try to ventilate the room with the air conditioning system. You should choose split air conditioning and avoid using central air conditioning. If central air conditioning is used, ensure the normal operation of air conditioning, increase the fresh air volume, and close the return air of all-air system. Then, families should be equipped with personal protective equipment, such as special thermometers, paper towels, masks, disposable gloves, disinfectants, disinfection products and covered trash cans. You can prepare more raw salt water, which is very useful and has no side effects. Normal saline nasal spray also contains no drugs, and adults and children are safe. It can be used to flush the nasal cavity and relieve the discomfort of nasal congestion. Most of them are sore throats and uncomfortable noses, so there is no need to cause too much fear. Drink more water every 30 minutes. That's all that matters. According to examples, drinking hot water can improve the condition. After three or four days, it is still very important to actively exercise and improve immunity. Some foods containing protein. Fish, shrimp, eggs, etc. And eat more fruits and vegetables, you can recover well.