He will host a Tweetchat about tech startups in Africa . Special guests include Juliana Rotich , Erik Johnson and Rebecca Enonchong . Follow # CNNAfrica on Twitter on Friday , January 14 at noon ET .
CNN will host a Tweetchat about tech startups in Africa . Special guests include Juliana Rotich , Erik Hersman and Rebecca Enonchong . Follow # CNNAfrica on Twitter on Wednesday , January 14 at 15:00 GMT .