4 Min Read BAMAKO/DAKAR (Reuters) - A second wave of coronavirus infections is hitting West and Central Africa, and experts are warning it could be worse than the first as cooler weather descends on a region where most countries cannot afford a vaccine. FILE PHOTO: A man wears his protective mask while sitting outside his house, as the global spread of the coronavirus disease (COVID-19) continues, in Ouakam neighbourhood of Dakar, Senegal October 23, 2020. REUTERS/Zohra Bensemra/File Photo Nigeria, Niger, Mauritania, Burkina Faso, Mali, Togo and Democratic Republic of Congo are all at or nea...