Omicron strain is a variety of COVID-19, and the symptoms after infection include fatigue, dry cough, fever, limb pain and other minor symptoms. At present, it is uncertain whether the symptoms are the same as those in COVID-19. In foreign cases, fatigue, dry cough, fever, limb pain, fatigue and other symptoms are more common, in addition to shortness of breath, headache, sore throat, runny nose and other symptoms.
The average number of newly diagnosed cases in the United States is the highest in the world, accounting for one-fifth of the new cases in the world. On average, there are120,000 confirmed cases and 1300 deaths in the United States every day. More than 50 million people have been confirmed dead and more than 800,000 people have died. Lemieux, an infectious disease expert at Harvard Medical School, pointed out that in the United States, the number of Omicron cases has surged, and the number of COVID-19 cases may continue to rise in the next holiday.
According to the Centers for Disease Control and Prevention, Delta accounts for 96% of newly diagnosed cases in the United States, and Omicron accounts for 3%. Mcginnis, director of pathogen genome monitoring at Harvard University and the Bode Institute of Massachusetts Institute of Technology, said that the proportion of Omicrons has risen sharply in the past two weeks. Through novel coronavirus's disease, humans realized that ACE2 protein entered human cells through cells. Most existing COVID-19 vaccines also attack human viruses by training human immune cells to recognize spinosin. The mutation of spike protein will affect the ability of virus to infect cells and spread, but it will also increase the difficulty of immune cells attacking pathogens.