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#Update: Increase in #Human #Infections with #Avian #Influenza #H7N9 Viruses During the 5th #Epidemic — #China, Oct. ‘16–Aug. 7 ‘17 (@CDCgov, edited)

Title : #Update: Increase in #Human #Infections with #Avian #Influenza #H7N9 Viruses During the 5th #Epidemic — #China, Oct. ‘16–Aug. 7 ‘17....

13 Feb 2017

#China, #H7N9 #epidemic much intense than previous years; #Jiangsu, #Zhejiang and #Anhui reported 43 #fatalities (Feb. 13 ‘17)

 

Title: #China, #H7N9 #epidemic much intense than previous years; #Jiangsu, #Zhejiang and #Anhui reported 43 #fatalities.

Subject: Avian Influenza, H7N9 subtype, widespread poultry epizootics and human cases in China.

Source: Local Media, full page: (LINK). Article in Chinese, edited.

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H7N9 epidemic much intense than the previous three years; Jiangsu, Zhejiang and Anhui reported 43 fatalities

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2017-02-13 19:47:00

Since January 2017, several provinces and cities nationwide H7N9 bird flu situation is not optimistic.

Although national health planning commission has not been announced in January 2017 the country (excluding Hong Kong, Macao and Taiwan) H7N9 outbreak summary data, but from some provinces released figures, H7N9 outbreaks in January 2017 than in December 2016 increased significantly.

According to the National Commission on Health announced in December 2016 the national epidemic profile of infectious diseases, the month (excluding Hong Kong, Macao and Taiwan) were infected with H7N9 avian influenza incidence of 106 cases, 20 deaths.

In January 2017, only Jiangsu, Zhejiang, Anhui provinces infected with H7N9 avian influenza cases has reached 104, the number of deaths 43. The incidence of H7N9 in the three provinces is comparable to the national incidence in December 2016, and the number of fatalities in the three provinces is twice the national figure in December 2016.

Surging news also noted that compared with previous years, in January 2017 H7N9 influenza epidemic is also more serious.

National Health and Family Planning Commission official website data show that in January 2014, the national human infection H7N9 avian influenza incidence and deaths were 127 cases, 31 cases; in January 2015, the national human infection with H7N9 avian influenza incidence and death The number of cases of H7N9 avian influenza infection and the number of deaths were 28 cases and 5 cases respectively in January, 2016.

The reason for the increase in the epidemic, China CDC February 13 to the surging news, the second half of 2016 may be more conducive to influenza climate conditions, H7N9 virus activity in birds and outside the environment increased, resulting in early H7N9 epidemic, distribution Wide, more cases.

Public data: Zhejiang, Anhui and Anhui provinces the most serious epidemic

February 7, Jiangsu Provincial Health Commission Web site announced in January this year, the province's statutory reporting of infectious diseases, the report shows that in January 2017, the province of human infection H7N9 avian influenza incidence of 49 cases, the number of 21 deaths.

February 13, Zhejiang Provincial Health Commission announced the January 2017 legal infectious diseases outbreak table shows that the month of Zhejiang Province, the incidence of human infection H7N9 35 cases of avian influenza, 11 cases of death.

Anhui Provincial Health Family Planning Commission also issued a notice on February 13, said the province in January this year, people infected with H7N9 influenza cases reported in 20 cases, 11 cases of death.

In addition, there were multiple deaths

According to the official website of the State Planning Commission, from November 1, 2013, people infected with H7N9 avian influenza into the statutory B infectious diseases management, the epidemic data will be regularly reported in the provinces monthly statutory infectious diseases reported. But so far, only some provinces announced in January 2017 epidemic data.

Have announced in January 2017 H7N9 bird flu epidemic data in the provinces are:

-- Hunan Provincial Center for Disease Control Center February 5, 2017 notice, as of February 5 12, Hunan Province in 2017 were reported cases of human infection with H7N9 influenza 20 cases, 5 cases of death.

-- Hubei Provincial Health Commission on February 9, 2017 issued a notice that, January 1, 2017 to February 9, the cumulative report of 19 cases of H7N9, cured and discharged in 2 cases.

-- Sichuan Provincial Health Commission reported on February 8, 2017, January 1, 2011 to 31, the province of human infection H7N9 avian influenza incidence in 2 cases, the number of deaths is zero.

-- Henan Provincial Health Commission February 2017 2017 notification, in January 2017 the province infected with H7N9 bird flu in 2 cases, 2 patients died.

-- According to the Fujian Provincial Health Commission announced in January 2017 the statutory report infectious disease information, in January the province reported a total of 11 cases of human infection with H7N9 influenza, and H7N9 influenza deaths, but the Fujian Provincial Health Commission did not announce the official website Death figures.

-- Shandong province in January 2017 statutory reporting infectious disease outbreak notification, in January 2017 human infection H7N9 influenza report in 3 cases, 2 deaths.

The epidemic in January was more severe than in the past three years

Surging news also noted that compared with previous years, in January 2017 H7N9 influenza epidemic is also more serious.

National Health and Family Planning Commission official website data show that in January 2014, the national human infection H7N9 avian influenza incidence and deaths were 127 cases, 31 cases; in January 2015, the national human infection with H7N9 avian influenza incidence and death The number of cases of H7N9 avian influenza infection and the number of deaths were 28 cases and 5 cases respectively in January, 2016.

January 11, 2017, China CDC in the National Health Commission announced in December 2016 National (excluding Hong Kong, Macao and Taiwan) statutory infectious disease outbreak of the situation assessment that China has entered the H7N9 epidemic season, the overall characteristics of the epidemic is not Change, do not rule out the southern part of the region, cases continue to occur and so on.

CDC: There may be four reasons for the increase

In addition, February 13, 2017, China CDC on the surging news, the recent outbreak of the possible reasons:

(A) the high level of environmental pollution outside the virus. Surveillance of live poultry market in provinces with high epidemic situation showed that the positive rate of H7N9 virus nucleic acid detection in outer environment samples was significantly higher since December, which was higher than that of previous years.

(B) the increase in the epidemic may also be related to climatic conditions since the winter. Compared with the same period in previous years, seasonal influenza in the second half of 2016 than in previous years into the popular season ahead of schedule, of which the southern provinces of about 2 months earlier than in previous years. Suggesting that the climate conditions in the second half of 2016 may be more conducive to influenza virus, H7N9 virus in poultry and external environment activities increased, resulting in H7N9 epidemic early, widely distributed, many cases.

(C) the increase in live bird consumption and the implementation of live poultry market management. Winter and spring season is the season of high consumption of poultry, in birds and related environment with high toxicity, a wide range of pollution circumstances, the crowd increased exposure and infection opportunities. Surveys show that areas with closed poultry markets and strict market stewardship are less likely to be affected, while those with more reported cases are often those where live poultry transactions are active and poor market management practices are implemented , The live poultry market, however, is active in rural areas where live birds are traded.

(4) It is related to trans-regional trade of poisoned birds. As the H7N9 virus is generally low pathogenicity of poultry, most of the birds infected with H7N9 virus does not appear morbidity and mortality, it is difficult to timely detection of infected birds are not timely identification and effective disposal and cross-regional live poultry trade The expansion of the scope of the virus contamination and the spread of the epidemic.

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Keywords: China; H7N9; Avian Influenza; Human; Poultry.

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