Summary of the prevention knowledge of h7n9 avian influenza
Four seas net: bird flu is coming again! Compared with previous years, this round of h7n9 avian influenza epidemic has some new characteristics. Since December last year, the number of human cases of h7n9 avian influenza in China has increased rapidly due to the relative warmth of the southern region last winter. According to the data from the disease prevention and Control Bureau of the national health and Family Planning Commission, in January this year alone, 192 cases of h7n9 avian influenza were reported and 79 people died. According to who data, from 2013 to the end of 2016, China reported less than 900 cases of seasonal human infection with h7n9 avian influenza. The comparison between the two groups of figures shows that the epidemic situation in this round is more serious than that in previous years.
At present, the epidemic situation is still on the rise, but it is a little comforting that the overall situation of h7n9 epidemic in China has not changed, and it is still sporadic. At present, there is no evidence that the virus has the ability of continuous human to human transmission. It is infected through exposure to the environment such as the infected poultry or live poultry market. The vast majority of patients can be determined. At the same time, the properties of related avian influenza virus and pathological characteristics of patients have remained stable in recent years without significant changes. These are all favorable factors. As long as the public is kept away from living livestock as much as possible, they can take the initiative in the prevention and control of the epidemic and minimize the losses caused by the avian influenza epidemic.
Although the epidemic is generally controllable, h7n9 avian influenza has become a seasonal "old problem" every year. For this embarrassing phenomenon, the whole society should deeply reflect and take action.
H7n9 is an acute respiratory infectious disease caused by avian influenza virus, with a high mortality. The results showed that the main infectious source of h7n9 virus was poultry, excreta and secretions. From these basic facts, we can know that avoiding contact with live birds and the environment polluted by the virus is the key to epidemic prevention and control.
However, some eating habits like fresh meat and live birds make it difficult to establish the firewall of avian influenza epidemic in China. Especially in winter and spring, which is the season of high incidence of respiratory infectious diseases, during the Spring Festival, many people will purchase, raise, slaughter, eat chickens and ducks and other poultry, no matter in urban and rural areas. This demand also makes the live poultry transportation and live poultry market more active. The eating habit of slaughtering live birds greatly increases the risk of avian influenza epidemic.
Old habits bring risks, and the main reason for the frequent 'patronage' of related epidemics is that old habits encounter new problems. The new problem here is mainly that the existing livestock breeding environment in China is poor. In order to achieve economic benefits, poultry are usually cultivated in high density, which is easy to cause disease. At the same time, a large number of excrement pollution caused by poultry breeding has worsened the living environment of poultry itself, making it easier to produce all kinds of epidemic diseases. It is these new problems brought by industrial production that make the old harmless habits gradually become an important hidden danger threatening the human environment and public health security.
The epidemic situation of avian influenza may last for some time. While the relevant departments do well in the prevention and control of the epidemic situation such as closing the live poultry market, they should closely monitor the possible evolution and recombination of avian influenza virus, and keep a high vigilance against the possible varieties of avian influenza virus. For the whole society, the frequent outbreaks in recent years have clearly shown that it is time to improve some old habits in our lives. At present, the urgent action is to purchase and eat the frozen poultry products that have been quarantined. Only by avoiding contact with live birds can we keep away from avian influenza.
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