It may be one of the most-vaccinated countries on earth, but the Seychelles has seen an explosion in cases – and the imposition of crippling new lockdown restrictions – since rolling out the Covid-19 jab. As the rest of the continent races to follow its lead, with Burundi and Tanzania receiving their first shipments in recent days, investigative reporter Sonia Elijah asks what lessons, if any, can be learned from the Seychelles’ apparent vaccine failure.