Africa; climate change; coronavirus disease 2019; dengue; diarrhea; drought; Ebola hemorrhagic fever; economics; ecosystem; environmental impact; flooding; food industry; food insecurity; forced migration; greenhouse effect; greenhouse gas; health care cost; health care organization; heat wave; human; infection; Lassa fever; Lyme disease; malaria; mental health; meteorological phenomena; morbidity; mortality; note; poverty; productivity; public health; rheumatic disease; Rift Valley fever; shelter-in-place; social problem; social support; storm surge; temperature