The infectiousness and lethality of omicron viruses cannot be clarified at this time. Active vaccination and daily protective measures are the key to preventing viral infection. Omicron is a variant of the New Crown Virus, whose infectiousness and lethality have not been clarified. Patients infected with Omicron virus have clinical symptoms such as dry cough, fever, limb pains, fatigue, headache, etc. A small number of patients may have a runny nose, shortness of breath, and sore throat. Therefore, it is particularly important to take active preventive measures. In the absence of contraindications to vaccination, timely vaccination with New Crown Vaccine is required, which can effectively prevent Omicron Virus infection. In daily life, it is necessary to take self-protection measures, avoid going to crowded places, wear protective masks when going out, do not come into close contact with others, and develop the habit of washing hands frequently. Once the patient has symptoms of Omicron Virus infection, he or she should go to the local hospital in time to undergo the relevant examination, so as to clarify the cause of the disease. At the same time, you need to actively cooperate with the doctor to take relevant treatment measures.