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. 2022 Mar 8;12(1):4103.
doi: 10.1038/s41598-022-07982-y.

Transmissibility of hand, foot, and mouth disease in 97 counties of China

Affiliations

Transmissibility of hand, foot, and mouth disease in 97 counties of China

Wei Zhang et al. Sci Rep. .

Abstract

Hand, foot, and mouth disease (HFMD) is a serious disease burden in the Asia-Pacific region, including China. This study calculated the transmissibility of HFMD at county levels in Jiangsu Province, China, analyzed the differences of transmissibility and explored the possible influencing factors of its transmissibility. We built a mathematical model for seasonal characteristics of HFMD, estimated the effective reproduction number (Reff), and compared the incidence rate and transmissibility in different counties using non-parametric tests, rapid cluster analysis and rank-sum ratio in 97 counties in Jiangsu Province from 2015 to 2020. The average daily incidence rate was between 0 and 4 per 100,000 people in Jiangsu Province from 2015-2020. The Quartile of Reff in Jiangsu Province from 2015 to 2020 was 1.54 (0.49, 2.50). Rugao District and Jianhu District had the highest transmissibility according to the rank-sum ratio. Reff generally decreased in 2017 and increased in 2018 in most counties, and the median level of Reff was the lowest in 2017 (P < 0.05). The transmissibility was different in 97 counties in Jiangsu Province. The reasons for the differences may be related to the climate, demographic characteristics, virus subtypes, vaccination, hygiene and other infectious diseases.

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Conflict of interest statement

The authors declare no competing interests.

Figures

Figure 1
Figure 1
Map of average daily morbidity in Jiangsu Province form 2015–2020.
Figure 2
Figure 2
The simulated incidence rates of HFMD in different regions in Southern Jiangsu. No. 1–40 refers to Southern Jiangsu, including Changzhou city No. 1–6 (Jintang district, Suyang county-level-city, Tianning district, Wujin district, Xinbei district, Zhonglou district, respectively), Nanjing city No. 7–17 (Gaochun district, Gulou district, Jianye district, Jiangning district, Liuhe district, Pukou district, Qixia district, Qinhuai district, Sushui district, Xuanwu district, Yuhuatai district, respectively), Suzhou city No.18–27 (Changshu county-level-city, Gongyeyuan district, Gusu district, Huqiu district, Kunshan county-level-city, Taichng county-level-city, Wujiang district, Wuzhong district, Xiangcheng district, Zhangjiagang county-level-city, respectively), Wuxi city No. 28–34 (Binhu district, Huishan district, Jiangyin county-level-city, Liangxi district, Xishan district, Xin district, Yixing county-level-city, respectively) and Zhenjiang city No. 35–40 (Dantu district, Danyang county-level-city, Jingkou district, Jurong county-level-city, Runzhou district, Yangzhong county-level-city, respectively).
Figure 3
Figure 3
The simulated incidence rates of HFMD in different regions in Northern Jiangsu. No. 41–77 refers to Northern Jiangsu, including Huaian city No. 41–47 (Huaian district, Huaiyin district, Jinhu county, Kafaqu district, Lianshui county, Qingjiangpu district, Xuyi county, respectively), Lianyun city No. 48–53 (Donghai county, Ganyu county, Guannan county, Guanyun district, Haizhou district, Lianyungang district, respectively), Suqian city No. 54–58 (Muyang county, Siyang county, Sihong county, Sucheng district, Suyu district, respectively), Yancheng city No. 59–67 (Binhai county, Dafeng district, Dongtai county-level-city, Funing county, Jianhu county, Sheyang county, Tinghu district, Xiangshui county, Yandu district, respectively), Xuzhou city No. 68–77 (Fengxian county, Gulou district, Jiawang district, Peixian county, Pizhou county-level-city, Quanshan district, Suining county, Tongshan district, Xinyi county-level-city, Yunlong district, respectively).
Figure 4
Figure 4
The simulated incidence rates of HFMD in different regions in Central Jiangsu. No. 78–97 refers to Central Jiangsu, including Nantong city No. 78–85 (Chongchun district, Gangzha district, Haian county-level-city, Haimen district, Qidong county-level-city, Rudong county, Rugao county-level-city, Tongzhou district, respectively), Taizhou city No. 86–91 (Gaogang district, Hailing district, Jiangyan district, Jingjiang county-level-city, Taixing county-level-city, Xinghua, county-level-city respectively), Yangzhou city No. 92–97 (Baoying county, Gaoyou county-level-city, Guangling district, Hanjiang district, Jiangdu district, Yizheng county-level-city, respectively).
Figure 5
Figure 5
The effective reported number of HFMD in different regions in Southern Jiangsu. No. 1–40 refers to Southern Jiangsu, including Changzhou city No. 1–6 (Jintang district, Suyang county-level-city, Tianning district, Wujin district, Xinbei district, Zhonglou district, respectively), Nanjing city No. 7–17 (Gaochun district, Gulou district, Jianye district, Jiangning district, Liuhe district, Pukou district, Qixia district, Qinhuai district, Sushui district, Xuanwu district, Yuhuatai district, respectively), Suzhou city No.18–27 (Changshu county-level-city, Gongyeyuan district, Gusu district, Huqiu district, Kunshan county-level-city, Taichng county-level-city, Wujiang district, Wuzhong district, Xiangcheng district, Zhangjiagang county-level-city, respectively), Wuxi city No. 28–34 (Binhu district, Huishan district, Jiangyin county-level-city, Liangxi district, Xishan district, Xin district, Yixing county-level-city, respectively) and Zhenjiang city No. 35–40 (Dantu district, Danyang county-level-city, Jingkou district, Jurong county-level-city, Runzhou district, Yangzhong county-level-city, respectively).
Figure 6
Figure 6
The effective reported number of HFMD in different regions in Northern Jiangsu. No. 41–77 refers to Northern Jiangsu, including Huaian city No. 41–47 (Huaian district, Huaiyin district, Jinhu county, Kafaqu district, Lianshui county, Qingjiangpu district, Xuyi county, respectively), Lianyun city No. 48–53 (Donghai county, Ganyu county, Guannan county, Guanyun district, Haizhou district, Lianyungang district, respectively), Suqian city No. 54–58 (Muyang county, Siyang county, Sihong county, Sucheng district, Suyu district, respectively), Yancheng city No. 59–67 (Binhai county, Dafeng district, Dongtai county-level-city, Funing county, Jianhu county, Sheyang county, Tinghu district, Xiangshui county, Yandu district, respectively), Xuzhou city No. 68–77 (Fengxian county, Gulou district, Jiawang district, Peixian county, Pizhou county-level-city, Quanshan district, Suining county, Tongshan district, Xinyi county-level-city, Yunlong district, respectively).
Figure 7
Figure 7
The effective reported number of HFMD in different regions Central Jiangsu. No. 78–97 refers to Central Jiangsu, including Nantong city No. 78–85 (Chongchun district, Gangzha district, Haian county-level-city, Haimen district, Qidong county-level-city, Rudong county, Rugao county-level-city, Tongzhou district, respectively), Taizhou city No. 86–91 (Gaogang district, Hailing district, Jiangyan district, Jingjiang county-level-city, Taixing county-level-city, Xinghua, county-level-city respectively), Yangzhou city No. 92–97 (Baoying county, Gaoyou county-level-city, Guangling district, Hanjiang district, Jiangdu district, Yizheng county-level-city, respectively).
Figure 8
Figure 8
Sensitivity analysis of k (range 0–1).

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