PAUL LORGERIE and EDWARD McALLISTER 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. Nigeria, Niger, Mauritania, Burkina Faso, Mali, Togo and Democratic Republic of Congo are all at or near record levels of infection, data compiled by Reuters shows. Infections in Senegal are also rising fast. Compared to the United States and Europe, the region has so far been spared the worst of the pandemic. West and Central African countries are…