{"version":"1.0","provider_name":"TBE Book","provider_url":"https:\/\/tbenews.com\/tbe","author_name":"IT","author_url":"https:\/\/tbenews.com\/tbe\/author\/brianong\/","title":"China - TBE Book","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"yd0af6xtGB\"><a href=\"https:\/\/tbenews.com\/tbe\/13-6-9\/\">China<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/tbenews.com\/tbe\/13-6-9\/embed\/#?secret=yd0af6xtGB\" width=\"600\" height=\"338\" title=\"&#8220;China&#8221; &#8212; TBE Book\" data-secret=\"yd0af6xtGB\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/tbenews.com\/tbe\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/tbenews.com\/tbe\/wp-content\/uploads\/2017\/09\/China.jpg","thumbnail_width":1180,"thumbnail_height":250,"description":"TBE in China Junfeng Yang and Heinz-Josef Schmitt &nbsp; ECDC risk status: endemic (last edited in June 2026, update for 2024 and 2025: no data) History and current situation Tick-borne encephalitis (TBE) is an endemic disease in some regions of northern China. The first TBE patients were reported in 1943 and TBE virus (TBEV) was isolated from brain tissues of two patients in 1944 by Japanese military scientists1 as well as from patients and ticks (I. persulcatus and Haemaphysalis concinna) in 1952 by Chinese researchers.2 In China, the Far Eastern (TBEV-FE) subtype is the endemic subtype which has been isolated from the 3 major endemic regions (northeastern China, western China and south-western China). It is mainly transmitted by Ixodes persulcatus.3 No European (TBEV-Eu), and Siberian (TBEV-Sib) subtypes were isolated to date according to our knowledge. Recently, Himalayan (Him-TBEV) subtype has been identified in wild rodents in Qinghai-Tibet Plateao in China.4 TBE patients are mainly reported from the epicenter: northeastern China, including Inner Mongolia Autonomous Region (Daxing\u2019an Mountains), Heilongjiang Province (Xiaoxing\u2019an Mountains) and Jilin Province (Changbai Mountains). Patients are also reported from another important epidemic area, the Tianshan Mountains and the Altai Mountains of the Xinjiang Autonomous Region5 as well as from other areas which were not considered to be endemic in the past (Figure 3). Cases may be missed as TBE is not a notifiable disease in China, especially in regions with lower TBE incidences, due to a lack of awareness among both physicians and the population and also due to a local lack of availability of serological testing. The incidence of TBE decreased in China during the 1980s. However, it has been rising since 2008, as noted by disease control and prevention sectors and local hospitals.5 Case numbers remained stable in recent years.6 TBE patients before the 1980s were mainly forest workers, however, it has been reported that changes in the occupation \/ type of \u201cexposure risk\u201d occurred among TBE patients ever since and in particular since the late 1990s with 70%-95% of the most recent patients being non-forest working farmers, housewives, domestic workers, students, or anyone with any occupation who entered the endemic forest areas.7 Cases among tourists may be underreported, considering that the Chinese \u201cTBE-epicenters\u201d are also tourist resorts, and probably fewer protection measures are applied by tourists. Overview of TBE in China Table 1: TBE in China Viral subtypes isolated Far Eastern TBEV subtype1 Reservoir animals Mice and insectivorous animals; migratory birds; lagomorphs, goats 8 Infected tick species (%) I. persulcatus, however TBEV has also been isolated from H. concinna, H. japonica, Dermacentor silvarum, and I. ovatus7 Dairy product transmission Not known Case definition used by authorities Clinical case: symptoms (such as acute fever, headache, vomiting and\/or typical central nervous system symptoms) + exposure in forests during spring or summer, or a tick bite history;Laboratory-confirmed case: clinical case + confirmed by laboratory serological tests (increased anti-TBEV IgG and IgM or \u22654-fold increase in specific antibody to TBEV between acute and convalescent serum samples) or PCR test positive for TBEV RNA if necessary9 Type of reporting Mandatory in Heilongjiang Province. Clinical TBE cases have been reported to the Chinese Information System for Diseases Control and Prevention (CISDCP) by the majority of provinces since 2002, such as Heilongjiang, Inner Mongolia Autonomous Region, Jilin, and Liaoning. No data publicly available 5 Other TBE-surveillance Detection of TBE virus in ticks have been conducted in endemic areas sporadically 10,11 Special clinical features Biphasic disease not reported from China. Different symptoms among patients with different disease severities; in the early 1950s, CFR of TBE in the northeastern forest areas was over 25%, but since the 1980s it has decreased to around 8%. Long-lasting sequelae of TBE are common, almost one-third of the patients in the 1952 outbreak had paralysis in the neck muscles or the shoulder muscles. Recently the complications of TBE over a ten-year period was reported to be 16.6% (90\/542)12-15 Licensed vaccines TaiSenBao produced in China with Sen-Zhang strain as seed strain in PHK cell (Changchun Institute of Bio-product) 16 Vaccination recommendations Residence in endemic areas, travelers to endemic areas, with no reimbursement 17 Vaccine uptake NA National Reference center for TBE Chinese Center for Disease Prevention and Control \/ http:\/\/ivdc.chinacdc.cn\/ Additional relevant information Seropositivity in the population: 19.7% in southwestern China; 35.4% in northwestern China; 0-10.9%, 0-9.8% and 7.6% in northeastern China 8 Figure 1: TBE case numbers and incidence in China, 2007 to 20186 2024 update: 2018: 170 cases; 2019: 141 cases; 2020: 50 cases; 2021: 52 cases; 2022: 117 cases; 2023: 117 cases; 2024: no data. Note: only 53% of cases are laboratory-confirmed. As opportunities for TBE-diagnostics (serology) are limited, and as there is no mandatory reporting of TBE in China, the approximate 300 &#8211; 400 documented cases in China each year since 2007 are probably just the tip of the iceberg Click the image above to enlarge Figure 2: Age and gender distribution of TBE in China, 2007-20186 &nbsp; Click the image above to enlarge Figure 3: Sites of confirmed and predisposed TBEV infection in China since 20066,5 Click the image above to enlarge Red circle: Reported TBE cases 2006\u20132013Red Triangles: Confirmed TBEV foci in Xinjiang and YunnanIntensity of blue color: Reflects the probability of an area to be endemic for TBEV, dark blue = 100%, light blue = lower probabilities based on various environmental and climate criteria as published by Sun et al. 2017 Contact Junfeng YangJunfeng.yang@pfizer.com Authors Junfeng Yang, Heinz-Josef Schmitt Citation Yang J, Schmitt HJ. TBE in China. Chapter 13. In: Dobler G, Erber W, Br\u00f6ker M, Chitimia-Dobler L, Schmitt HJ, eds. The TBE Book. 9th ed. Singapore: Global Health Press; 2026. doi:10.33442\/26613980_13-6-9 References Liu YJ, Jiang YT, Guo CS, Guan BP. Epidemiological characteristics of tick borne encephalitis natural foci in Jilin. Zhongguo Ren Min Jie Fang Jun Jun Shi Yi Xue Ke Xue Yuan Yuan Kan (Bulletin of the Academy of Military Medical Sciences) [in Chinese]. 1979;3:109-20. Yin DM, Liu RZ. Review on the control of forest encephalitis in the forest"}