Characteristics of newly diagnosed occupational pneumoconiosis in Luzhou City from 2006 to 2018

Objective To provide technical basis for the local government to make decisions on the prevention and treatment of pneumoconiosis for Luzhou City.

Methods Data of new diagnosed pneumoconiosis in the occupational disease and occupational health information monitoring system of Luzhou City(2006-2018)were abstracted and the characteristics of pneumoconiosis patients was analyzed.

Results From 2006 to 2018, a total of 2 356 new cases of pneumoconiosis(male 2 352 and female 4)were reported in Luzhou City, including 1 994 cases at stage 1(84.6%), 276 cases at stage 2(11.7%), and 86 cases at stage 3(3.7%). The cases were mainly engaged in job of mining in the coal mining and private economy and small enterprises. Most cases were diagnosed as coal workers' pneumoconiosis(2 055, 87.22%)and silicosis(280, 11.88%). The time to start dust exposure of these cases was during 1998 to 2007 (1 015 cases, 43.1%), during 2008 to 2013 (532 cases, 22.6%)and after 2013(9 cases, 0.4%). Among these cases, 697 cases (29.6%), 732 cases (31.1%)and 487 cases(20.7%)had accumulative exposure time varied from 10 - 19, 5 - 9 and less than 5 years, respectively. There was a trend that the severity of pneumoconiosis increased with exposure time extended; 16 cases at stage 3 had very short exposure time less than 5 years. There was two peaks in 2009 and 2013, when more cases were reported.

Conclusion It seemed that the number of reported pneumoconiosis cases in Luzhou City became decreased since 2013. It is necessary to take comprehensive measures for prevention of pneumoconiosis.