south African scientist detect a new coronavirus variant with multiple mutations but are yet to establish is transmissibility and immunity
I don't think this relates to Madagascar, at least not yet. Variant c1.2 apparently possesses some similarities to Delta, but has been circulating since at least May, and Delta is still by far the leading variant. c1.2 hasn't yet been named as a variant of concern or even of interest, so I suppose we wait and see. It has been noted, and will certainly be tracked if it starts to flourish, that's all that matters at the moment.
Meanwhile overall Covid cases in Madagascar remain — currently — very low.
https://github.com/CSSEGISandData/COVID-19