LIBBY GEORGE  NIGERIA’S Lagos state faces a "potential third wave" of coronavirus infections, its governor said in a statement. He warned of fines or even imprisonment for those who break rules to contain the virus and said Lagos state would step up its vaccination campaign, following the detection of the highly infectious Delta variant in an incoming traveller. Nigeria, Africa's most populous nation, has not been as hard hit by the COVID-19 pandemic as other parts of the continent, with just over 168,000 cases and 2,124 deaths confirmed since the outbreak began. But Nation Centre for Disease Control officials last…