Analysis of echinococcosis cases reported in non-endemic counties of Sichuan Province

doi:10.12140/j.issn.1000-7423.2021.02.007

Abstract

Abstract:

Objective To understand the epidemic distribution and epidemiological characteristics of reported cases in non-endemic counties of Sichuan Province. Methods The basic information, disease type and epidemiological history of the reported cases in non-endemic counties (cities/districts) of Sichuan Province from 2015 to 2019 were collected. WPS Excel 2019 software was used to establish a database, and the prevalence was analyzed. Results A total of 165 cases of echinococcosis were reported from 148 non-endemic counties in Sichuan Province from 2015 to 2019, which were distributed in 57 counties (districts) of 14 cities (prefectures). The number of cases was highest in 2016 (40 cases), and decreased thereafter. The number of reported cases in Chengdu was the highest (61 cases, 37.0%). There were 114 cases (69.1%) from villages and towns. The cases were reported in all age groups, with the highest proportion(52.7%) in the 41-60 years group (87/165). There were 103 males and 62 females, with a male-to-female ratio of 1.7 ∶ 1. The occupation distribution showed that the number of cases was higher in farmers and workers (58 and 28 cases), accounting for 52.1% (86/165). The numbers of cases of cystic and alveolar echinococcosis was 55 and 34, respectively, and the type of 76 cases was not classified. Of the 119 cases traced, 62.2% (74/119) had visited endemic areas of echinococcosis. Among them, 29 cases had visited endemic counties in Sichuan Province, and the most visited endemic areas outside Sichuan Province were Xinjiang (20 cases) and Tibet (15 cases). Conclusion The cases reported in the non-endemic counties of Sichuan Province from 2015 to 2019 were mostly from Chengdu City, townships, males, age group 41-60 years, and farmers, and most of them had visited the endemic areas of echinococcosis in Xinjiang and Tibet.

Key words: Sichuan Province, Non-endemic county, Echinococcosis, Case analysis

CLC Number:

R532.32

YAO Ren-xin, WANG Qian, LIAO Sha, ZHANG Guang-jia, HUANG Yan, YU Wen-jie, HE Wei, WANG Qi, LI Rui-rui, YANG Liu. Analysis of echinococcosis cases reported in non-endemic counties of Sichuan Province[J]. CHINESE JOURNAL OF PARASITOLOGY AND PARASITIC DISEASES, 2021, 39(2): 166-170.

Figures/Tables 5

Fig. 1

Table 1

Fig. 2

Table 2

Table 3

Traval history of echinococcosis cases reported from non-endemic counties in Sichuan Province during 2015—2019

到访的流行省 Endemic province visited	到访的流行县（区）（病例数） Endemic county (district) visited (No. cases)	有旅居史的病例数合计 Total No. cases with travel history
四川Sichuan
阿坝Aba	九寨沟（3例）,小金（2例）,若尔盖（2例）,理县（1例）,若尔盖、小金（1例）,未知县（2例） Jiuzhaigou(3), Xiaojin(2), Ruoergai(2), Lixian(1), Ruoergai and Xiaojin (1), Unknown(2)	11
甘孜Ganzi	石渠（4例）,甘孜（4例）,道孚（1例）,色达（1例）,德格、康定、泸定（1例）,道孚、稻城（1例）,未知县（5例） Shiqu (4), Ganzi (4), Daofu (1), Seda (1), Dege, Kangding and Luding (1), Daofu and Daocheng (1), Unknown (5)	16
凉山 Liangshan	冕宁（1例）Mianning (1)	1
青海Qinghai	玉树（2例）,同德（1例）,未知县（1例） Yushu(2), Tongde(1), Unknown(1)	4
陕西Shanxi	宝鸡（2例）Baoji(2)	2
云南Yunnan	呈贡（1例）Chenggong(1)	1
西藏Tibet	丁青（2例）,波密（1例）,那曲（1例）,拉萨（1例）,索县（1例）,阿里（1例）,左贡（1例）,米林（1例）,未知县（6例） Dingqing(2), Bomi(1), Naqu(1), Lasa(1), Suoxian(1), Ali(1), Zuogong(1), Milin(1), Unknown(6)	15
新疆Xinjiang	伊犁县（2例）,新源（1例）,伊宁（1例）,乌鲁木齐（1例）,和静（1例）,阿拉山口（1例）,塔县（1例）,库尔勒（1例）,吐鲁番（1例）,建设兵团（1例）,未知县（9例） Yili(2), Xinyuan(1), Yining(1), Wulumuqi(1), Hejing(1), Alashankou(1), Taxian(1), Kuerle(1), Tulufan(1), Jianshebingtuan(1), Unknown(9)	20
多地 Multiple places	西藏、新疆、四川甘孜（1例）,西藏、四川甘孜（1例）,西藏、四川石渠（1例）,西藏、四川色达（1例） Tibet, Xinjiang and Ganzi(1), Tibet and Ganzi(1), Tibet and Shiqu(1), Tibet and Seda(1)	4

Table 3

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市（州） City（Prefecture）	县（区） County（District）	报告病例数 No. report cases	构成比/% Ratio/%
成都Chengdu	14	61	37
雅安Yaan	4	17	10
绵阳Mianyang	5	15	9
遂宁Suining	5	14	8
眉山Meishan	3	14	8
凉山Liangshan	6	13	8
泸州Luzhou	5	9	5
资阳Ziyang	3	8	5
南充Nanchong	5	7	4
广元Guangyuan	2	2	1
达州Dazhou	2	2	1
乐山Leshan	1	1	1
广安Guangan	1	1	1
巴中Bazhong	1	1	1
合计Total	57	165	100

特征Feature	病例数No. cases	占比/% Proportion/%
性别Gender
男Male	103	62.4
女Female	62	37.6
年龄组Age group
0~10	5	3.0
11~20	11	6.7
21~30	17	10.3
31~40	21	12.7
41~50	52	31.5
51~60	38	23.0
61~70	14	8.5
71~80	6	3.6
> 80	1	0.6
职业Occupation
农民Famer	58	35.2
工人Worker	28	17.0
干部职工Cadre	16	9.7
学生Student	14	8.5
商业服务Merchants	13	7.9
家务及待业houseworker and unemployed	12	7.3
儿童Children	2	1.2
离退人员Retiree	2	1.2
自由职业Freelance	2	1.2
不详Unkown	18	10.9
合计Total	165	100

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