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Background: India has over 50 million workers employed in industries with exposure to very high sound levels, predisposing them to noise-induced hearing loss (NIHL). Methods: We conducted a systematic review and meta-analysis by using the following criteria: (1) Observational or experimental studies conducted in India; (2) English language studies; (3) Published during January 2010--December 2019; (4) Primary outcome: proportion of participants detected with NIHL. We reviewed bibliographic databases (PubMed, Scopus, and DOAJ) and Google Scholar, and extracted the relevant data. Results: A total of 160 documents were identified after removing duplicates, and 33 full texts were screened, of which 22 studies were included. The mean (SD) effective sample size of the studies was 107.1 (78.9). The pooled proportion of participants with NIHL irrespective of the category was 0.49 (95%CI: 0.22--0.76) and that of hearing loss was 0.53 (95%CI: 0.28-- 0.78). Most studies reported that none of the workers, especially in the informal sectors, used auditory protection. Conclusions: NIHL is a major neglected public health occupational health challenge in India linked with adverse social determinants of health. Sustained advocacy for implementation of legislative and behavior change communication for protecting the hearing of workers is warranted. [ABSTRACT FROM AUTHOR]

Background: An occupational hazard is a growing concern for developing countries. The study aims to assess the pattern and the factors associated with morbidity of the steel plant workers and the usage of social security schemes among them. Materials and Methods: The cross-sectional study was conducted in two steel plants of the Angul district of central Odisha from May to August 2019. The steel plant workers were assessed for occupational hazard using a structured questionnaire and a physical examination was conducted. Chi-square test and binary logistic regression were used to find out the association. Results: Dust was the most common exposure followed by noise and heat. Myopia (26.7%), generalized weakness (19.0%), hearing impairment (19.0%), respiratory illness (15.9%), hypertension (11.0%), myalgia (10.2%), and peripheral neuropathy (9.1%) were the common morbidities among the steel plant workers. Exposure to dust, noise, vibration, chemicals, and year of exposure is the common determinants of morbidities. Only 63.5% of the study participants availed of different social-security schemes. Conclusions: Pre-placement examination, regular medical check-ups, and the use of proper safety measures during work can reduce the chance of morbidities. Authorities need to sensitize the workers to safety equipment and hazard-prone conditions and also regarding social-security schemes. [ABSTRACT FROM AUTHOR]