Full
Outline
To analyze the epidemiological characteristics of Salmonella foodborne diseases in Hunan Province from 2014 to 2023, and to provide references for disease prevention and control, thereby promoting the rational allocation and targeted intervention of public health resources.
Active surveillance data were collected through the "Foodborne Disease Monitoring and Reporting System", and descriptive analysis was conducted on the epidemiological characteristics of Salmonella foodborne diseases in Hunan from 2014 to 2023. Global and local spatial autocorrelation analyses were performed using ArcGIS 10.8 software.
From 2014 to 2023, sentinel hospitals in Hunan Province reported a total of 2 459 Salmonella-positive cases through active surveillance, with a positivity rate of 7.79%. The lowest number of cases was recorded in 2014 (142 cases), while the lowest positivity rate (5.26%) occurred in 2016. In contrast, 2023 showed the highest figures, with 455 cases and a positivity rate of 10.24%. The incidence exhibited clear seasonality, with higher case numbers in July (426 cases), August (385 cases), and September (354 cases). The positivity rates were also elevated in June (11.92%), July (11.71%), and August (11.17%), indicating that the period from June to September was the peak season for Salmonella infections. The majority of cases (1 572 cases, 66.93%) were concentrated in children aged 5 years and younger. Among the suspected food exposures linked to Salmonella infections, dairy and dairy products accounted for the highest proportion (22.15%). Global spatial autocorrelation analysis revealed a positive spatial correlation in Salmonella positivity rates across Hunan Province from 2015 to 2016. Local spatial autocorrelation analysis further identified "high-high" clustering areas, primarily in Liuyang City, Yuhua District, Tianyuan District, Shifeng District, and Yuetang District.
From 2014 to 2023, Salmonella foodborne diseases in Hunan showed an increasing trend with significant spatial clustering. Prevention and control efforts should be strengthened during high-incidence periods, among high-risk populations, and in key regions.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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