On the 26th local time, WHO Director-General Tan Desai said that the global new crown epidemic situation is still deteriorating, and the number of new cases has increased for 9 consecutive weeks. The number of new cases worldwide last week “is almost equivalent to the first 5 months after the outbreak. The total number of cases”. In addition, the WHO said that the number of people infected with the new crown in India has increased exponentially, which is “very shocking and heartbreaking.”
The reasons include the lack of preparedness that residents do not maintain social distancing, poor social management, insufficient medical standards, and virus mutation caused by laissez-faire. 1. Lax preparedness and failure to maintain social distancing; Indian people celebrate the Big Pot Festival in other countries, including my country. Inside, the people gradually relax. 2. Due to inadequate management levels in backward countries, people cannot achieve a certain degree of isolation; there is no running water, no sewer pipes in slums, and there may be only wooden boards or iron sheets between residents, which are very prone to the spread of infectious diseases. 3. Insufficient medical level is reflected in: severe lack of personnel and equipment, hospital management chaotic, and insufficient ability to track viruses (1) The mutation is very serious due to negative epidemic prevention, long infection time of patients and free movement of most infected persons. Common problems in Indian medical institutions include insufficient oxygen and ventilators, the infectious ward is not divided according to the “three zones and two passages”, the medical staff is not fully protected, and the patient’s family is free to move around in the infectious ward, and so on. The video of nesmto in the Indian hospital under the new crown has 15,000 broadcasts. Because the mutation is completely random, the more people infected, the longer the infection time, the more out of control the infected people, and the greater the probability of mutation. India first discovered 240 mutated viruses at the end of February 2021. Later, in the samples collected from 18 states in India, 771 new coronavirus mutations were found in 771 samples. Among them, 736 were positive for the British variant, 34 were positive for the South African variant, and 1 was positive for the Brazilian variant, covering the global category. Subsequently, the researchers found as many as 7684 virus variant genomes in more than 5,000 samples, which means that some patients were infected with more than one variant virus. 1 Untimely sequencing may prevent new variants from being discovered in time. According to New Delhi reports, Gujarat still has no idea whether there is a SARS-CoV-2 mutant in the state because it was sent back to the National Institute of Virology in Pune ( NIV) The samples for genome sequencing have not yet been reported. The newspaper reported that whole genome sequencing (WGS) results of samples collected from COVID-19 patients (some of which were sent earlier than March) have not yet been received by the national health department. At the beginning of April, the state had sent 646 samples to NIV, but only received reports of 181 samples.  4. Mutations may affect the effect of antibody immunity. In the January survey, 56.1% of residents in New Delhi had antibodies, indicating a history of previous infections. According to the traditional view, January has reached the level where most people have antibodies, and it is not far from “herd immunity”. The epidemic should gradually slow down, but there has been an outbreak recently. The possible reason is: when a person is vaccinated and infected with an evolved pathogen (the pathogen carries a new antigen), the immune system will produce antibodies against the original pathogen. This is because specific B cells prevent the activation of naive B cells, resulting in a weak immune response against the pathogen.