TABLE 4.

Adhesin genotypes and phenotypes of three control strains positive for F10 by PCR but not by serology

Strainb	O:K:H serotype	F serotype		PCR	Adhesin genotypea							MRHA pattern
		Putativec	Confirmedd		papAH	papC	papEF	papG	papG allele	afa/draBC	sfaS
C659-81	O1:K51:H−	F8	F−	F10	+	+	+	−	−	+	−	Non-P
G1062a	O4:K7:Hr	NAe	F−	F10	+	+	+	+	III	−	−	P
C826-83	O75:K5:H−	F15	F−	F10	+	−	−	−	−	−	−	−f

^aAs determined by PCR, except for papAH in strain C826-83 (PCR negative, probe positive for papAH). +, wild type; −, mutant. 

^bStrains C659-81 (alias FS09) and C826-83 (alias FS30) were from the IEKC laboratory. Strain G1062a (alias C892-97) was from the J.R.J. laboratory (Table 1). 

^cBased on historical serotyping results for strains from the IEKC. 

^dIncluding with 10× concentrated F10 antiserum. 

^eNA, not applicable (strain G1062a was first serotyped during the present study). 

^f−, HA negative.