"According to the epidemic data, the H7N9 flu epidemic in the spring of this year was the most severe in recent years (except for the new H7N9 flu epidemic in the winter of 2013)." The day before yesterday, the Zhejiang Provincial Center for Disease Control and Prevention established infectious diseases. Ling Feng, the deputy director of the institute, said that most cases have contact history with live birds, so we must never buy live chickens.
According to the epidemic briefing of the Zhejiang Provincial Health and Family Planning Commission, 35 new cases of H7N9 influenza were reported in Zhejiang in January, including 11 deaths. The number of cases and deaths in January 2016 was 13 cases and 2 cases. In January 2015, there were 11 cases and 1 case. In January 2014 (winter 2013), there were 61 cases and 17 cases. The number of H7N9 flu cases and deaths in the spring of this year ranks second in recent years.
Recently, the General Office of Zhejiang Provincial People's Government issued a notice to close all live poultry trading markets in all counties of the province before 18 o'clock on February 11, 2017. In addition, on July 1st, 2014, Zhejiang Shidai implemented the Regulations on the Management of Live Poultry Transactions in Zhejiang Province, which stipulates that the province’s main downtown area is a live poultry transaction restricted area and will permanently stop market live poultry transactions. Zhejiang Province will further expand the ban on live poultry trading areas. The main urban areas of all counties and cities in the province will close the live poultry trading market to prevent the H7N9 flu epidemic from expanding again.
Our province reported last year
H7N9 flu case
The vast majority have contact history with live birds
According to data from the Zhejiang Provincial Health Planning Commission, a total of 44 cases of H7N9 flu were reported in Zhejiang in 2016, of which 43 cases involved wading/witted poultry sites, accounting for 97.7%, which was higher than 90% in 2015.
Only from autumn of 2016 to New Year's Day of 2017, 21 cases of H7N9 flu were reported in total (having clear history of exposure to poultry sites), and 2 died. Among them, there were 9 males and 12 females, the largest being 81 years old and the youngest being 33 years old; 11 of them had basic disease history. From the age of onset, people aged 60 and above account for 45% of the population, and farmers account for 50%.
In January 2017, 35 new cases of H7N9 flu were reported in Zhejiang Province, including 11 deaths. Judging from the region, there are related cases in Yuhang District, Hangzhou, and Wenzhou and Lishui are areas where there are more new cases this year.
Ling Feng, deputy director of the Provincial Center for Disease Control and Prevention, said that this epidemic of the H7N9 flu is characterized by the vast majority of patients living with live poultry. The symptoms of the disease are the same as in previous years. They are flu-like symptoms such as fever and cough. , Lesser phlegm can be accompanied by headache, muscle aches and general malaise.
"But after this wave of patients with H7N9 flu became ill, severe patients developed rapidly with severe pneumonia. Most of the body temperature persisted above 39, and dyspnea was found, accompanied by hemoptysis; rapid development of acute respiratory distress syndrome , shock, multiple organ failure, etc., even death, to remind everyone that if there is a live poultry contact history within a week or a week ago, similar illnesses must immediately go to the hospital's fever clinic, and explain to the doctor that there were live birds Contact history."
H7N9 influenza cases in our province
"Infection rate after purchasing live poultry from mobile stalls" increased
Deputy Director Ling Feng said that from the analysis of viral genes, the H7N9 virus in the new epidemic season did not change significantly compared with the previous season, but the epidemic presented three characteristics:
The epidemic spreads widely. From the geographical point of view, in the past, the H7N9 flu in Zhejiang was mainly concentrated in northern Zhejiang and gradually shifted to south Zhejiang and central Zhejiang in the new epidemic season. The exposure ratio was high, and people were still in contact with live poultry in the live poultry market. It is the main source of infection, and the proportion of infections after the purchase of live birds from mobile vendors has increased; rural cases have a larger proportion.
"Since last December, both the positive rate of specimens in the external environment and the number of reported cases have increased substantially." Ling Feng, deputy director of the Provincial Center for Disease Control and Prevention, said that the previously discovered cases were in northern Zhejiang. As a result, this epidemic began to move southwards. Wenzhou, Lishui, and other areas with few incidences in previous years are also increasing this year.
The disease control department regularly collects samples of water, poultry faeces, etc. at the farmers' market for monitoring of the H7N9 influenza virus in the external environment. In September 2016, the positive rate of these specimens was about 10%. In January of this year, the positive rate of specimens was 20%. In the spot-checked farmers' market, in September of last year, about 10 of the 100 markets would find the H7N9 flu virus. This year, the proportion has increased to 40%.
The situation in other provinces is also not optimistic: In 2016, a total of 83 cases of H7N9 flu were reported in Jiangsu province, and 25 cases were dead. The Anhui Provincial Health and Family Planning Commission recently announced the statutory infectious disease epidemic in the province in January of this year. Among them, 20 cases were infected with H7N9 influenza and 11 were dead. Beijing reported on February 11 that a case of imported humans has been infected with the H7N9 flu. This is the first case of H7N9 flu in Beijing this year.
“But the public does not have to worry too much. According to the epidemic characteristics of the H7N9 flu in Zhejiang Province, the H7N9 virus activity will decline as the temperature rises in March and April. The positive rate of H7N9 in the external environment of Zhejiang Province will gradually decline, and the public’s risk of infection will increase. Lower," said Deputy Director Ling Feng. (Source: Zhejiang Online - Shaoxing County Newspaper)
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