Giuseppe
Emeritus
[Source: EpiSouth, full PDF document: (LINK). Edited.]
EpiSouth Weekly Epi Bulletin ? N?263 - 27th March ? 02nd April 2013
(?)
Location: China - Event: A(H7N9) influenza
On 03rd and 04th April 2013, Chinese health authorities reported a total of 11 human cases (including 4 deaths) of A(H7N9) influenza virus infections in 4 different provinces (cf. Table 1 and map 1).
In Shangai and Anhui province
Cases of A (H7N9) infections have already been reported in the literature in birds in Europe and the United States. However, no human cases infected with A (H7N9) have been described to date.
In mainland China, human cases of influenza A (H9N2) infections have been reported: Guangdong Province and Hong Kong in 2009 (cf. eWEB n?85).
To date, the source of contamination or probable exposure is currently unknown.
Currently, no A (H7N9) or A (H9N2) epizooties have been reported in birds or in other animals in this region. However, China is considered by the FAO as an endemic country for influenza A (H5N1).
In China, it is common that A (H5N1) infections in human cases are reported without any outbreaks occurring or reported in the region, reflecting thus, an under-reporting of outbreaks. At this stage, no epidemiological link has been identified between the 11 confirmed cases from the 4 Chinese provinces.
To date, we cannot yet exclude the possibility of a human-to-human transmission.
Province de Jiangsu
To date, the available information is insufficient to estimate the impact of this epidemic.
However, the occurrence of these 11 cases over a short period time in four different provinces lead health authorities to follow the situation with the greatest attention.
Table 1. Number of confirmed A(H7N9) influenza virus infections in humans, China, up to 04/04/2013.
[case No. - Reporting Provinces - Person infected (gender, age) - Status (Alive / Dead) - Comments]
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EpiSouth Weekly Epi Bulletin ? N?263 - 27th March ? 02nd April 2013
(?)
Location: China - Event: A(H7N9) influenza
On 03rd and 04th April 2013, Chinese health authorities reported a total of 11 human cases (including 4 deaths) of A(H7N9) influenza virus infections in 4 different provinces (cf. Table 1 and map 1).
In Shangai and Anhui province
- On 1st April 2013, a total of 3 human infections (including 2 deaths) was reported to WHO, in these provinces :
- 2 males (aged 87 and 27 years-old), with symptoms onset end of February 2013. Both died on 4th and 10th March 2013 respectively.
- 1 woman, resident in Anhui (province border to Shangai) with symptoms onset on 15/03/2013. She is in severe condition and hospitalised in Jiangsu.
- There is no epidemiological link between these 3 cases.
- For only one of the three cases, contacts with dead poultry have been reported (the case from Anhui).
- The 27 year old man is working as a butcher in a market.
- In total, 88 case-contacts have been identified. Investigations are ongoing.
Cases of A (H7N9) infections have already been reported in the literature in birds in Europe and the United States. However, no human cases infected with A (H7N9) have been described to date.
In mainland China, human cases of influenza A (H9N2) infections have been reported: Guangdong Province and Hong Kong in 2009 (cf. eWEB n?85).
To date, the source of contamination or probable exposure is currently unknown.
Currently, no A (H7N9) or A (H9N2) epizooties have been reported in birds or in other animals in this region. However, China is considered by the FAO as an endemic country for influenza A (H5N1).
In China, it is common that A (H5N1) infections in human cases are reported without any outbreaks occurring or reported in the region, reflecting thus, an under-reporting of outbreaks. At this stage, no epidemiological link has been identified between the 11 confirmed cases from the 4 Chinese provinces.
To date, we cannot yet exclude the possibility of a human-to-human transmission.
Province de Jiangsu
- On 03 April 2013, a total of 5 human infections (including 1 death) was reported to WHO in Jiangsu province (cf. table 1) :
- 2 males aged 83 and 48 years-old and, 3 women aged 32, 45 and 48 years-old. All are in critical conditions.
- The 48 years-old male died on 04th April 2013.
- There is no epidemiological link between these 5 cases. For only one case, contacts with dead poultry have been reported.
- In total, 167 case-contacts have been identified. Investigations are ongoing.
- On 03rd and 4th April 2013, a total of 3 human infections (including 1 death) was reported in Zhejiang province :
- 1 male aged 38 years-old who died on 27th March 2013. He was a cook in Jiangsu province restaurant.
- 2 males aged 67 and 64 years-old who were both hospitalized.
- There is no epidemiological link between these 3 cases.
- In total, 183 case-contacts have been identified. Investigations are ongoing.
To date, the available information is insufficient to estimate the impact of this epidemic.
However, the occurrence of these 11 cases over a short period time in four different provinces lead health authorities to follow the situation with the greatest attention.
Table 1. Number of confirmed A(H7N9) influenza virus infections in humans, China, up to 04/04/2013.
[case No. - Reporting Provinces - Person infected (gender, age) - Status (Alive / Dead) - Comments]
- Shanghai - Male - 87 y. - 0 - 1 - Died on 4th March 2013
- Shanghai - Male - 27 y. - 0 - 1 - Died on 10th March 2013
- Anhui - Female - 35 y. - 1 - 0 - Symptoms onset 15/03. Hospitalized in Jiangsu. Severe condition.
- Jiangsu - Female - 45 y. - 1 - 0 - Symptoms onset 19 February 2013. Critical condition.
- Jiangsu - Female - 48 y. - 1 - 0 - Symptoms onset 19 February 2013. Critical condition.
- Jiangsu - Male - 83 y. - 1 - 0 - Symptoms onset 20 February 2013. Critical condition.
- Jiangsu - Female - 32 y. - 1 - 0 - Symptoms onset 21 February 2013. - Critical condition.
- Zhejiang - Male - 38 y. - 0 - 1 - Symptoms onset 7 Mach 2013. Died on 27th March 2013.
- Zhejiang - Male - 67 y. - 1 - 0 - From Hangzhou. Hospitalised 25 March 2013.
- Zhejiang - Male - 64 y. - 1 - 0 - Symptoms onset 29 March, Hospitalised 31 March 2013.
- Jiangsu - Male - 48 y. - 0 - 1 - Died on 04 April 2013.
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