Table 1 Characteristics of SFTS clusters in China, 2011–2021
Serial code | Time | Location | Cluster scale, n | Death cases, n | Infection route of index case | Human to human transmission | Secondary cases, n | Place |
|---|---|---|---|---|---|---|---|---|
1 | October 2011 | Rongcheng city, Shandong province | 5 | 1 | Tick bite | Yes | 4 | Hospital |
2 | May 2012 | Wuhan city, Hubei province | 3 | 2 | Tick bite | Yes | 2 | Home |
3 | September 2013 | Penglai city, Shandong province | 9 | 2 | Tick bite | Yes | 8 | Hospital and home |
4 | May 2014 | Huzhou city, Zhejiang province | 12 | 1 | Suspected tick bite | Yes | 11 | Hospital and home |
5 | October 2015 | Chuzhou city, Anhui province | 3 | 1 | Not known | Yes | 2 | Hospital and home |
6 | May 2016 | Yantai city, Shandong province | 4 | 1 | Suspected tick bite | No | – | Living environment |
7 | July 2016 | Suzhou city, Jiangsu province | 3 | 1 | Suspected tick bite | Yes | 2 | Hospital and home |
8 | August 2016 | Maanshan city, Anhui province | 3 | 1 | Not known | No | – | Living environment |
9 | August 2016 | Tongling city, Anhui province | 2 | 1 | Tick bite | Yes | 1 | Home |
10 | April 2017 | Tongling city, Anhui province | 2 | 0 | Not known | No | – | Field |
11 | April 2017 | Suizhou city, Hubei province | 3 | 1 | Tick bite | Yes | 2 | Hospital and home |
12 | May 2018 | Maanshan city, Anhui province | 2 | 0 | Suspected tick bite | No | – | Field |
13 | July 2018 | Shaoxing city, Zhejiang province | 4 | 2 | Suspected tick bite | Yes | 3 | Hospital |
14 | July 2018 | Nanjing city, Jiangsu province | 7 | 2 | Suspected tick bite | Yes | 6 | Hospital and home |
15 | July 2018 | Maanshan city, Anhui province | 2 | 0 | Suspected tick bite | No | – | Living environment |
16 | July 2018 | Weihai city, Shandong province | 2 | 1 | Not known | No | – | Living environment |
17 | September 2018 | Weihai city, Shandong province | 2 | 1 | Suspected tick bite | Yes | 1 | Hospital |
18 | May 2019 | Chuzhou city, Anhui province | 2 | 0 | Tick bite | No | – | Field |
19 | June 2019 | Zhangjiajie city, Hunan province | 2 | 0 | Tick bite | No | – | Living environment |
20 | September 2019 | Lianyungang city, Jiangsu province | 3 | 2 | Tick bite | Yes | 2 | Hospital and home |
21 | April 2020 | Tongling city, Anhui province | 2 | 1 | Suspected tick bite | No | – | Living environment |
22 | April 2020 | Maanshan city, Anhui province | 8 | 1 | Tick bite | Yes | 7 | Hospital |
23 | April 2020 | Anqing city, Anhui province | 4 | 0 | Tick bite | No | – | Tea garden |
24 | May 2020 | Nanjing city, Jiangsu province | 2 | 0 | Suspected tick bite | No | – | Living environment |
25 | May 2020 | Maanshan city, Anhui province | 2 | 1 | Suspected tick bite | Yes | 1 | Hospital |
26 | June 2020 | Hefei city, Anhui province | 3 | 0 | Suspected tick bite | No | – | Living environment |
27 | July 2020 | Jinhua city, Zhejiang province | 2 | 0 | Suspected tick bite | No | – | Field |
28 | July 2020 | Chaohu city, Anhui province | 2 | 0 | Suspected tick bite | No | – | Living environment |
29 | September 2020 | Huaihua city, Hunan province | 6 | 1 | Tick bite | Yes | 5 | Hospital and home |
30 | June 2021 | Chaohu city, Anhui province | 2 | 0 | Tick bite | No | – | Living environment |
31 | June 2021 | Maanshan city, Anhui province | 2 | 0 | Tick bite | No | – | Field |
32 | May 2021 | Maanshan city, Anhui province | 2 | 1 | Tick bite | Yes | 1 | Hospital |
33 | April 2021 | Changzhou city, Jiangsu province | 2 | 0 | Suspected tick bite | Yes | 1 | Home |
34 | June 2021 | Weihai city, Shandong province | 2 | 1 | Suspected tick bite | No | – | Field |
35 | June 2021 | Weihai city, Shandong province | 2 | 0 | Not known | No | – | Living environment |