OCCUPATIONALhealth SOUTHERN AFRICA Vol 26 No 4 JULY/AUGUST 2020 Official Journal of SASOM, SAIOH, SASOHN and MMPA • The South African Society of Occupational Medicine • Southern African Institute for Occupational Hygiene • South African Society of Occupational Health Nursing Practitioners • Mine Medical Professionals Association An accredited journal of the Department of Higher Education and Training (RSA) Occupational Health Southern Africa www.occhealth.co.za Vol 26 No 4 July/August 2020 1 2 Vol 26 No 4 July/August 2020 Occupational Health Southern Africa www.occhealth.co.za Vol. 26 No. 4 July/August 2020 Front cover photograph Dr Botembetume Maboso, occupational health practitioner in Lesotho, stands OCCUPATIONAL outside the Mafeteng District Hospital health Occupational Health Service Centre. SOUTHERN AFRICA Source: Katiso Simon Motopi EDITOR-IN-CHIEF Gill Nelson, PhD (Occupational Health): University of the Witwatersrand, SA. Affiliations: University of the Witwatersrand, SA; MMPA Life Member e-mail:
[email protected] ASSISTANT EDITOR Ntombizodwa Ndlovu, PhD (Occupational Health): University of the Witwatersrand, SA. Affiliation: University of the Witwatersrand, SA e-mail:
[email protected] The South African Society of Occupational Medicine (SASOM) EDITORIAL BOARD Jaco Botha Kevin Beaumont, MA (English): University of Natal, SA. Affiliation: MettaMedia, Publisher’s Representative Tel: +27 (0)12 803 7418 Fax: +27 (0)11 507 5085 Michelle Bester, M Tech Nursing Science: Tshwane University of Technology, SA. Affiliations: Tshwane University of Technology, SA; SASOHN Member e-mail:
[email protected] website: www.sasom.org Natalie Copeling, B Tech (Occupational Health Nursing): Stellenbosch University, SA. Affiliations: Cape Peninsula University of Technology, SA; SASOHN Member Johan du Plessis, PhD (Occupational Hygiene): North-West University, SA.