IA cohort study of nuclear industry workers was initiated in 1990 to determine the possible health effects of low-level radiation. A total of 5,527 deaths were ascertained among 176,000 male workers who had been retrospectively and/or prospectively followed for an average of 7.9 years during the observation period 1986-1997. Statistical analyses were made mainly on the prospective follow-up outcome of 120,000 workers followed for an average of 4.5 years. The standardized mortality ratio (and its 95% confidence interval) was 0.94 (0.90, 0.97) for 2,934 cases of all causes combined and 0.86 (0.82, 0.91) for 1,305 cases of non-malignant diseases combined, which suggested a healthy worker effect. For 1,191 cases of all cancers combined, it was 0.98 (0.93, 1.04), indicating no difference in mortality from that of the general population. In tests for trend of death rate with increasing radiation dose, no significant correlation was found for all cancers combined. For site-specific cancers, most cancers including leukemia showed no positive correlation with dose, except for cancers of the esophagus, stomach and rectum and multiple myeloma. External causes showed a significant correlation with dose. A separate questionnaire study indicated that these positive findings could be ascribed in part to lifestyle characteristics of the workers. For leukemia only, we attempted to estimate the excess relative risk per unit dose of radiation, which, with reservations because of its wide confidence interval, was within the range of variation of the risks reported in other radiation epidemiological studies. This population must be studied for a longer time and with a consideration of the possible effects of confounding factors.

To examine confounding on the risk assessment of the radiation workers at nuclear facilities in Japan, a questionnaire survey of their characteristics such as life-style and occupational history was performed for 54,369 male and 470 female workers who were currently engaged in the job and valid answers were obtained from 48,281 males and 428 females. In order to know whether these characteristics were different among different dose groups, the Mantel extension statistical test was performed only for male respondents, with cumulative radiation doses stratified into 5 classes. Increasing trend according to the increasing doses was statistically significant for the percentages of tobacco smokers and of heavy smokers. It was also the case for heavy alcohol drinkers. Percentages of workers who were engaged in jobs dealing with specific toxic materials were also increasing in the higher dose groups. On the other hand, percentage of workers who underwent the X-ray examination of the upper digestive tracts or other radiological examinations tended to be lower in higher dose groups. These results indicate that characteristics of radiation workers such as life-style are different among dose groups and thus may play a role as a confounding factor in the statistical relation between the radiation doses and cancer mortalities.

To obtain the underlying causes of death in individuals of a cohort (male only), the items of date of birth, date of death and address code at the time of death were linked between the data of resident cards and the death tapes of National Vital Statistics supplied by the Ministry of Health and Welfare. As a result, the persons who have the same information for above mentioned three items between the resident cards and the death tapes accounted for 97.4%. If the persons who had the same information for three items except one item were considered to be identical, they accounted for 99.4%. It would be concluded that underlying cause of death can be obtained by record linkage of death tapes of National Vital Statistics with three informations in residence cards, dates of birth, dates of death and address codes at the time of death, even without names of the individual in the death tapes. The matched rate would be high enough for epidemiological studies.

The COVID-19 pandemic has put in the foreground the dramatic actuality of global and local inequalities, undermining neo-liberal, communitarian, democratic or cosmopolitan projects of collective identity. In the light of intersecting inequalities such as class, race/ethnicity and gender, an explosion of Sinophobia, social stigma and physical attacks targeting people of East Asian and Southeast Asian appearance or heritage has been widely reported in Euro-American media. This article will focus on the case of Italy during the initial stage of the pandemic in early 2020. Italy has not only been the first European country to be exposed to the pandemic and to undergo national lockdown but also a country where the wave of racist assaults started in late January 2020, even before the first clusters have been detected. The critical investigation of Italian media discourses will highlight how deep-rooted, colonialist and ambivalent assumptions about the ‘Oriental’, ‘Asian’, ‘Chinese’ and ‘yellow’ other may have been crucial to the reproduction of racism against specific people, cultures and civilizations, regardless of nationality, class and gender. It will refer in particular to the concept of ‘yellowness’, resulting from a process of bio-cultural racialization within the hegemonic frame of ‘Western’, ‘White’ or ‘Italian’ identity. Furthermore, it will indicate how this process of racialized othering has emerged, but has also been contested, within the specific context of citizenship, Asian immigrants and governmental actions in contemporary Italy. The overall aim is not so much to denounce higher levels of racism in Italy compared to other Euro-American countries; rather, this article refers to the Italian case to stress how both global and local trajectories do mutually overlap to shape, and eventually to transform, a national context, offering further insights on the glo-calization of the civilizational ‘West’/’East’ divide in the 21st century.

No abstract