This newspaper news (intern reporter Chai Rong) Human metapneumovirus is circulating in the United States, which has recently aroused social concern. Yesterday, the Chinese Center for Disease Control and Prevention responded that it is expected that the high incidence of human metapneumonic virus in the United States will have a limited impact on China, and the prevention of the virus is similar to the prevention and control of other common respiratory viruses.

According to the introduction of disease control, human metapneumovirus belongs to the pneumoviridae family and is one of the common respiratory pathogens. In 2001, Dutch scientists first detected the virus from nasopharyngeal aspirates samples from children with respiratory infections caused by unknown pathogens, and serological studies have shown that it has been present for at least 60 years and is distributed worldwide. The virus is mainly transmitted by droplets or aerosols from coughing and sneezing, and can also be caused by close contact with an infected person and contact with an environment contaminated with the virus. Usually the incubation period after infection is about 3 to 5 days, and it induces weak immune protection, and recurrent infections are common. Human metapneumovirus was detected throughout the year, but the highest detection rate was in winter and spring.

From January to April this year, among the samples voluntarily sent by various laboratories in different regions of the United States, the detection rate of human metapneumonneumonium virus showed a significant peak, which attracted a certain degree of international attention. However, since late April, the positive rate of metapneumonic virus antigen and nucleic acid in Americans has continued to decline rapidly, and by late May it had fallen to a low level. China CDC said that since the beginning of this year, personnel exchanges between China and the United States have gradually resumed, and there is a possibility that human metapneumonneumovirus infection will be imported into China, but considering that the current epidemic of the virus in the United States has been significantly reduced, and China has entered the summer, the climatic conditions are not suitable for the spread of the epidemic, so it can be expected that the high incidence of human metapneumonneumonic virus in the United States has limited impact on China.

Children, immunocompromised people and the elderly are susceptible to human partial pneumovirus, and after infection, they often cause common cold symptoms, specifically manifested as cough, fever, nasal congestion and wheezing, etc., and can also cause bronchitis and pneumonia in severe cases. In susceptible people with underlying conditions, infection with human metapneumovirus may lead to death. At present, there is no vaccine and specific drug for the virus, and the treatment measures are mostly symptomatic supportive therapy.

According to the CDC, the prevention of human metapneumonic virus is similar to the prevention and control of other common respiratory viruses, and it is necessary to maintain a regular life and a good attitude, it is best to wear a mask when going to crowded places or environments, and at the same time to wash hands, ventilate frequently, scientific disinfection and other preventive measures, which can effectively reduce the chance of infection. (Beijing Daily)