Secondly, it is caused by the working environment of the slaughterhouse. In many meat processing plants, employees are in close contact and work for a long time, each shift is about 10- 12 hours, so it is impossible to keep social distance between employees. The temperature in the workshop of meat factory is generally low. Compared with the high temperature and high humidity environment, the virus can survive in this low temperature and dry environment for a longer time. The virus can survive for up to 3 days on plastic and steel surfaces common in meat processing plants.
In addition, it is caused by the increase in the severity of the disease. This point has not been seen in the domestic research and observation of Guangdong epidemic situation, which can significantly increase the severity of the disease. However, in the British study, it was found that patients infected with delta virus showed signs of increased disease severity. Compared with α variant, the risk of hospitalization of patients infected with δ variant increased by 2.6 times. Its impact on mortality has not been clearly studied.
In public places, outings and crowded places, it is necessary to wear masks scientifically according to regulations. Wearing a mask can effectively block bacteria, viruses and droplets in the air, which is an important measure to prevent respiratory infectious diseases. The public should learn to wear masks scientifically to protect themselves and others. A number of confirmed cases were added, and the epidemic situation in COVID-19, China showed a trend of multiple occurrences, and many campuses experienced epidemics. In view of this situation, it is necessary to further strengthen campus management and health monitoring of teachers and students.