Since the beginning of this year, people in China have been infected with H7N9 bird flu cases. According to the latest data released by the National Health and Family Planning Commission, last week (February 6 to February 12 2017), 69 cases of H7N9 cases were reported nationwide, of which 8 were dead. In the last 3 days, the national epidemic has shown a downward trend (from February 12 to 14, the number of H7N9 cases reported in the country was 3, 1 and 4 cases respectively, which was significantly less than the previous stage). Experts said that China is currently at a high incidence of human infection with the H7N9 bird flu. Monitoring showed no mutation in the virus and the overall characteristics of the epidemic did not change. It is expected that there will be reports of sporadic cases of H7N9 in Mainland China in the most recent period.

A few days ago, Beijing reported two cases of imported H7N9. Previously, human cases of H7N9 bird flu had been reported in Fujian, Yunnan, Hunan, Hubei, and Zhejiang, and some provinces had H7N9 infections. Shu Yuelong, deputy director of the China Center for Disease Control and Prevention and director of the National Influenza Center, said that at present, China is in a high incidence of human infection with the H7N9 bird flu: "Every winter and spring is a high incidence of H7N9 or other respiratory infections, so it has been since last winter. One is due to a variety of reasons such as climate, the bird flu epidemic in the global animal industry has been extremely high, affecting Europe, the Middle East and our neighboring countries such as Japan and South Korea. There have been many reports. This is an outbreak of bird flu. H7N9 Since its arrival in the winter, our country has indeed experienced more statistics, earlier occurrences, and wider distribution than previous years. It is mainly distributed in the country, mainly in the Yangtze River Delta region and the Guangdong Province."

Shu Yuelong said that recently the epidemic has increased. In addition to the climate and other factors, there are two important reasons: "As we all know, every year in the winter and spring, except for seasonal and climatic reasons, this time is also our Spring Festival, and the consumption of poultry at this time of year It is also the most, so it has a certain relationship with the increase in consumption, so it is the season with higher consumption in winter and spring, when the consumption is high, if the use of poultry and related environment is high and the pollution is wide The chance of natural human infection will increase, and it will also lead to an important reason that we have actually increased compared to previous years. Another is that our H7N9 epidemic has a great challenge to prevent and control. This virus is not effective for poultry. Treatment is very difficult to monitor, and it is very difficult for us to carry out stringent monitoring and control of the trade in poultry and trans-regional transportation. This has caused us a great challenge. So the number of cases mentioned earlier is also very wide and it is very toxic. Poultry trade in poultry areas is somewhat related. These reasons have led to a certain increase in the number of cases this year."

It has been four years since the H7N9 bird flu virus appeared in China. Does the virus have any variation? Shu Yuelong said: "This virus has been around for 4 years. Actually, our country has a very powerful monitoring network to monitor the mutation of this virus. We have so far discovered the virus through the results of our surveillance and the The important molecular characteristics of pathogenicity, transmission, and infection have not changed, so this virus has indeed been such a situation since 2013. However, influenza viruses do change any viruses, so our powerful monitoring network is still Monitor it."

In order to do a good job of prevention and control of bird flu, the National Health and Family Planning Commission of the People's Republic of China has convened a nationwide winter and spring infectious disease prevention and control video conference in early January to guide local authorities in strengthening the prevention and control of the epidemic and intensifying supervision and inspection. In addition, for some patients with a critical condition and a high mortality rate, the Health and Development Planning Commission also requested that local medical organizations strengthen the training of doctors. If patients are suspected to be infected with the H7N9 bird flu virus, they can use some of them if they do not need to wait for the test results. The effect of the drug. Dr. Chen Zhihai, chief physician of the Beijing Ditan Hospital Infection Center, said: “Actually, there are more specific treatments for the H7N9 flu. We have oseltamivir for oral use, and there is a lot better for intravenous use than oseltamivir. Medicinal, called palamivir for vein leaves, these drugs have very good effect on the suppression of influenza virus, but the sooner these drugs are used, the better the effect, especially within 2 days, or 48 hours of onset. Within that, we even said that within 36 hours we would achieve better results."

With the further implementation of prevention and control measures and treatment measures in various parts of the country, the prevention and control effects have initially appeared. However, Ni Daxin, deputy director of the China CDC Emergency Response Center, said that the following trends in the epidemic still need to be highly vigilant: "As for the situation in this wave of epidemics, what is the general situation? At present, one is common across all parts of the country. Efforts have also seen some preliminary results. In particular, the number of reported cases has decreased significantly in the past 3 days. We should see from the pattern of the H7N9 epidemic over the past few years that we can basically see that after the spring festival of the year, it takes about 10 days and a half months later. There will be a significant decline, but it will remain at a lower level of morbidity, probably until late April, which is basically the case in recent years, but this year because of the relatively wide distribution of the current outbreak, This year is indeed a climate factor, etc. It may not be the same as in previous years. The trend in the latter part of the year must be observed. In general, everyone must maintain a high degree of vigilance. Measures should not be relaxed. As long as our measures are implemented, we are confident that we should be able to Control it well. This is about the later trend."

Experts said that a long-term mechanism should be established to promote centralized slaughter, cold chain transportation, and chilled-to-ice listing. This would effectively reduce the exposure of the public and live birds and greatly reduce risks. Another measure is to implement large-scale, standardized, and aquaculture methods that meet the requirements of bio-safety prevention, and truly block the spread of the virus among poultry.

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