Delta virus is a mutated subspecies of New Coronavirus, which is characterized by rapid viral replication, high in vivo load, slow transfer rate, high transmission index, and long treatment time. Vaccination, self-protection, social distance and active medical care are the fastest ways to stop the spread of delta virus. 1. Vaccination: New crown vaccine still has a preventive effect on delta virus and is still a very effective measure to prevent delta virus, so timely vaccination is recommended to reduce the rate of delta virus infection. 2. Wearing the correct mask to reduce the respiratory transmission of the delta virus, and thoroughly washing hands and disinfecting clothing in a timely manner can effectively reduce the rate of transmission of the delta virus; 3. 4. Take the initiative to seek medical attention: If you have symptoms such as nausea, diarrhea, fever, fatigue, slight sore throat, or have had close contact with a confirmed case, it is recommended to seek medical attention at a fever clinic in a hospital in a timely manner to confirm the diagnosis through tests such as nucleic acid and lung CT to avoid aggravating the disease or infecting people around you.