Full
Outline
To analyze the spatial distribution characteristics and changing trends of newly reported echinococcosis cases in endemic areas of Sichuan Province from 2020 to 2024, so as to provide a reference for formulating precise prevention and control strategies.
Based on the China Disease Control and Prevention Information System, county-level data on new cases of echinococcosis reported from 2020 to 2024 in endemic areas of Sichuan Province were collected. GeoDa 1.2.0 software and ArcGIS 10.3 software were used to conduct global spatial autocorrelation analysis, local spatial autocorrelation analysis and hotspot analysis on the reported incidence rates.
From 2020 to 2024, 378 new cases of echinococcosis were reported in 35 endemic counties in Sichuan Province. The annual reported incidence rates were 2.11 per 100 000, 2.54 per 100 000, 2.80 per 100 000, 3.19 per 100 000, and 4.29 per 100 000, respectively. Among the endemic prefectures, Aba Prefecture recorded the highest average annual reported incidence rate (5.64 per 100 000), while Ganzi Prefecture ranked second (2.31 per 100 000). The global spatial autocorrelation analysis showed that the reported incidence rate of echinococcosis in Sichuan Province had a positive spatial correlation in 2020, 2022, and 2024 (Moran’s I=0.295, 0.257, and 0.109; Z>1.96; P<0.05 for all years), and was randomly distributed in 2021 and 2023 (Moran’s I=-0.065 and 0.042; Z<1.96; P>0.05 for both years). Local spatial autocorrelation analysis identified four clustering patterns: “High-High”, “High-Low”, “Low-High” and“Low-Low”. The “High-High” clusters were primarily concentrated in Aba County, Barkam City, and Rangtang County within Aba Prefecture. The hotspot analysis indicated that from 2020 to 2024, the hotspots of the reported incidence of echinococcosis in Sichuan Province shifted from Ruoergai, Hongyuan, and Heishui counties in the north-central region of Aba Prefecture toward the southwestern border areas between northern Aba Prefecture and Ganzi Prefecture, and the primary hotspot regions were concentrated in Rangtang County, Aba County, Barkam City, and Jinchuan County of Aba Prefecture, along with Seda County of Ganzi Prefecture.
From 2020 to 2024, the reported incidence rate of echinococcosis in endemic areas of Sichuan Province showed an increasing trend, with significant spatial clustering observed. It is recommended to strengthen the management of sources of infection and wildlife host control measures in hotspot areas, and to develop regional comprehensive prevention and control strategies.
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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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