Guangzhou has a new BA.2 transmission chain. What's the difference between this virus and Omicron?

BA.2 mutant is becoming the main mutant in the world, not only in China, but also in Omicron. On March 1 1, Singapore's Minister of Health Wang Yikang pointed out that at present, the main strain prevalent in Singapore is Omicron subspecies BA.2, and nearly 90% of patients are infected with BA.2. There are three subtypes of Omicron mutant strains, including BA. 1, Ba.2 and Ba.3. Because of its high infectivity,

In this epidemic prevention and control, we worked closely with telecom operators to give full play to the large capacity and strong interactivity of 5G technology, and used 5G messages to send risk reminders to' yellow code' personnel and key people. It is understood that after receiving the 5G message, citizens can inquire about the Guangzhou epidemic prevention and control policy, fill in the nucleic acid test results, or link to the "Suihaoban" APP through the 5G message, master the service news of the nucleic acid test point, and get the best route with one click.

The incubation period and passage interval are short. Research shows that the intergenerational transmission of BA.2 is 2-3 days, that is, one generation. More infectious. The spreading power is several times that of Delta mutant. Space-time companions passing by at close range may be infected. Transmission is more covert. There are many asymptomatic infected people, many of whom have no symptoms or mild symptoms, and are more prone to multiple sporadic or concentrated outbreaks. Cooperate with the implementation of epidemic prevention policy. Everyone should continue to do a good job of protection, wear masks, don't gather, and take protective measures such as vaccination.

At present, many countries in the world choose to keep the virus based on the judgment that Omicrovirus is an epidemic influenza, that is, Omicrovirus is highly contagious and has a low mortality rate. Most people can heal themselves after being infected, and it will not run on the medical system in developed countries. The causes of children's serious illness and even death after being infected with the epidemic include not being vaccinated with COVID-19 vaccine, having few opportunities to go to school in recent two years, not being exposed to common coronavirus, making them unable to produce cross-resistance to the epidemic, or suffering from rare congenital immunodeficiency.