H.parainfluenzae requires which of the following factors
High-Yield Explanation
H.influenzae, H.haemolyticus, and H.aegyptius: requires both factor X and VH.parainfluenzae, H.parahaemolyticus, and H.paraphrophilus: Requires only factor VH.aphrophilus: Doesn't require both factors(Ref: Ananthanarayan 9th edition, p328)