Table 1.

NTHi colonisation status in participants between visit 1 and visit 2 (n = 50).

	NTHi Colonisation at Visit 1 -> Visit 2 Frequency (%)
Hh Genotype	NTHi+ | NTHi− (Colonisation Loss)	NTHi− | NTHi− (Never Colonised)	NTHi+ | NTHi+ (Consistently Colonised)	NTHi− | NTHi+ (Colonisation Gain)
Total	8/50 (16)	26/50 (52)	4/50 (8)	12/50 (24)
hpl+	7/8 (88)	23/26 (88)	2/4 (50)	2/12 (17)
hpl−	1/8 (12)	3/26 (12)	2/4 (50)	10/12 (83)

^+/− Detection by PCR for corresponding gene targets siaT (NTHi), hypD (Hh) and the hpl ORF.