Require X (hemin) and/or V (nicotinamide adenine dinucleotide) factors for growth • Responsible for 0.5–1% of all cases of IE • Haemophilus ... factor for non-HACEK Gram-negative endocarditis.
“The well-authenticated detection of Haemophilus influenzae in an early medieval child promises that it will be detectable in more cases in history, and potentially prehistory,” he says.