This study characterizes the foreign students with tuberculosis (TB) registered in Japan from 2010 to 2014 and compares their TB notification rates with those in their countries of origin. The TB notification rates in foreign students were retrieved from the National Epidemiological Surveillance of Infectious Disease system in Japan. National TB notification data from 16 countries and areas were extracted from the World Health Organization’s and the official health websites of the countries and areas. There were 1128 foreign students in Japan who developed TB between 2010 and 2014; nearly half of the cases were from China ( = 530, 46.9%), and 688 (61.0%) were male with a median age of 23 years. The TB notification data for foreign students were highest in students from the Philippines (675/100 000 person years, 95% confidence interval: 372–977). The notification rates in foreign students from seven countries were significantly higher than the average notification rate in their countries of origin (China, Indonesia, Mongolia, Myanmar, Nepal, the Philippines and Viet Nam). The Republic of Korea and Taiwan, China had significantly lower rates in foreign students than in their countries of origin. The notification rates for foreign students in Japan may reflect a more accurate risk of developing TB among the immigrants to Japan than the TB notification rates in their countries of origin. These results may be helpful to identify the immigrants’ countries/areas of origin with the necessity of pre-entry TB screening.

The proportion of foreign-born people among the newly notified tuberculosis (TB) patients has been increasing in recent years and potentially poses a new challenge to TB control in Japan. In this report, we analysed the data from the Japan TB surveillance system between 2007 and 2014 to gain an overview of the trends and characteristics of foreign-born TB patients in Japan. We found that the proportion of foreign-born TB patients was especially high among the younger age groups – 44.1% among the 20–29 years age group in 2014. The largest groups of foreign-born patients were from China and the Philippines; however, the number of those from Nepal and Viet Nam was on the rise. Students comprised the second largest professional category group for TB after regular workers, and its proportion increased over the study period. Compared to Japan-born TB patients, foreign-born patients were more likely to be diagnosed through routine medical check-ups. Treatment successes and patients still on treatment were significantly lower among foreign-born patients than their Japan-born counterparts; and transferred-out and unknown outcomes were higher. Our results indicated that distinctive subgroups within the foreign-born population in Japan, especially students and regular workers, might have a higher risk of developing TB. Measures to ensure early diagnosis and treatment adherence should be adapted to such populations.

Introduction: We studied the characteristics and treatment outcomes of the following risk groups for tuberculosis (TB): those with HIV and diabetes mellitus (DM), contact cases, the homeless, foreigners, health care workers (HCW) and the elderly. Method: A descriptive cross-sectional study was conducted by analysing the Japanese TB surveillance data of all cases registered between 2007 and 2010 (N = 96 689). Results: The annual proportion of TB cases by risk group was stable over the study period, although there was a slight but significant increase observed for foreigner and elderly cases. Homeless and elderly TB cases had the highest DM co-morbidity (16.6% and 15.3%), respectively. HIV co-infection was low in all TB cases (0.2%) yet highest in foreigners (1.3%). HIV status of 45% of TB cases was unknown. The proportion of multidrug-resistant TB (MDR-TB) was similar among all risk groups (0.0%–0.9%) except foreigner, at 3.4%. Males in most risk groups had higher mortality than females; the mortality of all TB cases in all age groups for both males and females was 3.6–24 times higher than the general population. Discussion: Reasons for the high proportion of “HIV status unknown” should be investigated and improved. Contact tracing among foreign cases with MDR-TB should be a priority. Homeless persons should be screened for DM together with TB. Programmes to enhance health and nutrition status may benefit TB prevention among the elderly. Tuberculosis screening and TB education are important for HCW.

Foreign-born persons are considered one of the high-risk populations for tuberculosis (TB), and numerous studies have discussed the potential role of pre-entry TB screening for immigrants. However, rates of TB disease among immigrants can remain high several years after entry. In Japan, approximately 50% of TB among foreign-born persons occurs among those who have entered Japan more than five years before being diagnosed, i.e. non-recent immigrants. However, little attention has been paid so far to the issue of TB control among the non-recent immigrants. A detailed analysis of the Japan Tuberculosis Surveillance data was therefore conducted to describe the characteristics of TB among non-recent immigrants and discuss policy implications in terms of post-entry interventions in Japan. The main findings were as follows: 1) the proportion of pulmonary TB cases aged 65 years and older was higher among non-recent than recent immigrants (9.8% vs 1.2%); 2) the proportion of those with social risk factors including homelessness and and being on social welfare assistance was higher among non-recent than recent immigrants; and 3) the proportion of those detected via routine screening at school or workplace was significantly lower among non-recent immigrants aged between 25 and 64 than among recent immigrants in the same age group (15.4% vs 28.7%). Our results suggested the need to increase the opportunities for and simultaneously improve the take-up rate of community-based screening for non-recent immigrants.

Introduction: Tuberculosis (TB) patient delay, i.e., the duration from the onset of symptoms to the time of TB diagnosis is one of the issues in TB prevention and control in Japan, where Universal Health Coverage (UHC) has been achieved decades ago. We studied the trends and risk factors for patient delay by three categories, namely short (less than 2 months), medium (more than 2 months and less than 6 months) and long (longer than 6 months)-delay, and discussed implications for social protection measures. Methods: A descriptive cross-sectional study was conducted by analyzing the Japanese TB surveillance data of symptomatic pulmonary TB (PTB) cases registered between 2007 and 2017 (n = 88351). Results: While the number of patients with short delay has decreased significantly, of those with medium and long delay have shown very modest decrease. In fact, the proportion of those with medium delay has steadily increased, from 14.3% in 2007 to 17.0% in 2017. Not having health insurance, receiving social welfare, temporary workers, and history of homelessness were some of the risks identified for patient delay. Male gender and being a full-time worker were two risks specifically associated with long delay. Discussion

Objective  To identify issues in health communication regarding treatment support for foreign-born who are diagnosed as latent tuberculosis infection (LTBI) in Japan, from the perspective of public health centers (PHCs).Methods  A self-administered survey was sent to 469 PHC, between June and July 2020. The survey asked closed and open-ended questions to tuberculosis (TB) program personnel on (1) their experiences of foreign-born patients who were eligible for LTBI treatment but did not start their treatment, and who started treatment but were lost to follow-up, and (2) health communication issues with foreign-born patients. Responses were summarized descriptively for close-ended questions, and analyzed qualitatively for open-ended question.Results  We obtained response from 307 PHCs, regarding 315 foreign-born patients. Twenty-five patients did not initiate, and 52 were lost to follow-up after initiating LTBI treatment. Of the 77 patients who either did not start treatment or were lost to follow-up, 45 apparently could hold everyday conversation in Japanese but had difficulties understanding technical terms, and 19 could not even exchange basic conversation, with PHC staff. Barriers to LTBI treatment initiation and completement, as perceived by PHC staff, included “lack of correct knowledge about TB and LTBI”, “different attitudes to health” and “economic difficulties”. Conclusion  Issues in health communication between PHC staff and foreign-born patients included not only a language barrier, but also the unconscious mind among PHC staff, which sought reasons for refusal or termination of LTBI treatment in patients. We argue that this mind is based on positivism, whereby health personnel consider themselves as the provider of “scientific knowledge” and that “lay persons” can act rationally once enlightened. However, PHC staff may need to reflect upon such position as the provider of scientific knowledge, but instead, learn from foreign-born patients about how they perceive health, TB or LTBI, to conduct better communication.

This report examines the characteristics and treatment outcomes of patients with tuberculosis (TB) who are coinfected with HIV in Japan. Active TB cases newly notified to the Japan Tuberculosis Surveillance system during 2012–2020 were analysed retrospectively, during which 379 HIV-positive TB cases were reported. The proportion of HIV-positive cases among those with known HIV status increased, from 1.9% (62/3328) in 2012 to 3.5% (31/877) in 2020. The proportion of those with unknown HIV testing status was consistently high, at approximately 60%, and the proportion of those who did not undergo HIV testing increased significantly, from 21.6% (4601/21 283) in 2012 to 33.7% (4292/12 739) in 2020. The proportion of foreign-born cases more than tripled, from 14.5% (9/62) in 2012 to 45.2% (14/31) in 2020. The TB treatment success rate was higher among HIV-negative than HIV-positive cases (72.7% [3796/5222] versus 60.3% [88/146]), and among Japan-born than foreign-born HIV-positive patients (65.6% [61/93] versus 50.9% [27/53]), owing largely to the high rate of foreign-born cases transferring to care outside Japan. The increasing proportion of HIV positivity among TB cases tested for HIV in this study requires ongoing monitoring, especially among foreign-born persons. However, because the number of reported cases was small, and there was low completeness of reporting of HIV testing data in the TB surveillance system, these results should be interpreted with caution. Encouraging more complete data collection by training public health nurses who complete TB case interviews and ensuring ongoing monitoring of patients with TB/HIV coinfection are recommended.

Objective: This study aims to compare the epidemiology of notifications of latent tuberculosis infection (LTBI) among Japan-born and foreign-born children in Japan between 2010 and 2020, and to assess the language used during LTBI case interviews with parents or caregivers of foreign-born children with LTBI during 2019. Methods: Our study consisted of two parts: (1) an analysis of national data from the Japan Tuberculosis Surveillance (JTBS) system on the epidemiology of LTBI among Japan-born and foreign-born children in Japan and (2) a survey of staff at public health centres that had registered at least one foreign-born child aged <=14 years with LTBI. Data were extracted from the JTBS system for all children aged <=14 years who were newly notified as having LTBI between 2010 and 2020, and analysed to determine trends, characteristics and treatment outcomes. Staff at relevant public health centres completed a self-administered survey. Results: A total of 7160 Japan-born and 320 foreign-born children were notified as having LTBI between 2010 and 2020. Compared with Japan-born children, foreign-born children notified as having LTBI were more likely to be older, have their mother or sibling as their source of infection and have LTBI detected via a routine school health check. At case interviews, the use of language interpretation services was limited, even when both parents were non-Japanese. No interview was directly conducted with children themselves, not even with school-aged children. Discussion: Foreign-born children and their parents may be unfamiliar with the system of testing for TB infection and the diagnosis of LTBI in Japan in school settings. Public health centres are required to provide education to patients and their families and care that takes into account cultural and linguistic differences. However, the provision of language support during case interviews may need strengthening.