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"COVID-19 situation report for WHO Africa Region"(PDF). NIHR Global Health Research Unit Tackling Infections to Benefit Africa at the University of Edinburgh. 1 July 2021. p. 53. Retrieved 9 July 2021.
Chilufya, Chitalu (17 March 2020). "PRESS BRIEFING ON COVID-19". Ministry Of Health, Zambia. Archived from the original on 28 September 2020. Retrieved 15 May 2020.