Risk factors for COVID-19 infection, disease severity and related deaths in Africa: a systematic review by Kefyalew Addis Alene, Akilew Awoke Adane, Digsu Negese Koye, Berihun Assefa Dachew, Abadi Kahsu Gebre, Mohammed Biset Ayalew, Yohannes Kinfu, Yohannes Adama Melaku, Mulugeta Molla Birhanu, Hassen Mohammed, Teketo Kassaw Tegegne, Yalemzewod Assefa Gelaw, Dagnachew Muluye Fetene, Muluken Dessalegn Muluneh, Solomon Abrha, Kidane Tadesse Gebremariam, Tesfaye Gebremedhin, Amanuel Tesfay Gebremedhin, Lemlem Gebremichael, Ayele Bali Geleto, Getiye Dejenu Kibret, Cheru Tesema Leshargie, Azeb Gebresilassie Tesema, Fisaha Haile Tesfay, Befikadu Legesse Wubishet, Hailay Abrha Gesesew, Mulu Woldegiorgis, Mamaru Ayenew Awoke, Desalegn Markos Shifti, Atsede Fantahun Aregay, Maereg Wagnew Meazaw, Alemayehu Berhane Mekonnen, Dejen Yemane Tekle, Wubshet Tesfaye

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