TABLE 2.

Linkage among P and G genotype, electropherotype, and subgroup specificities of 284 rotavirus strains circulated between 1992-1993 and 1999-2000 in Hungary^a

Strain type	RNA profile	No. of samples in category or with subgroup specificityb				Season(s) of detectionc
		I	II	Non- groupable	Not done	1992-1993	1993-1994	1994-1995	1995-1996	1996-1997	1997-1998	1998-1999	1999-2000
Usual strains
P[8],G1	Long		100	6	27	+	+	+	+	+	+	+	+
P[4],G2	Short	25		17	1	+	+	+	+	+		+	+
P[8],G3	Long		6		2	+		+	+	+
P[8],G4	Long		21	3	8	+	+	+				+	+
Unusual strains
P[4],G2	Long	1		1					+				+
P[6],G4d	Long		5	1	3	+		+				+	+
P[9],G3	Long	2			3		+		+			+	+
P[9],G6	Long	11		4					+		+	+
P[14],G6	Long	1								+
P[8],G9	Long	3	6	3	7						+		+
Mixed infections (n = 17)e	NAf	NA	NA	NA	NA	+	+	+		+	+		+

^aPlease note that due to our sample selection, data in this table do not reflect a true P type prevalence; also, there is a strong bias toward the prevalence of less frequent G types, such as G3, G6, and G9.

^bSubgroup was assigned only for those specimens where there was clear reactivity with one sg MAb and low reactivity with the other sg MAb. Those specimens that reacted with both sg I and sg II MAbs or with neither sg I nor sg II MAb were specified as nongroupable.

^cSeasons when strains with the indicated P-G combinations circulated are marked with a plus sign.

^dAll patients infected with P[6],G4 strains developed symptoms and were of an age (mean age, 2.0 years; range, 0.3 to 5.8 years) similar to that described for all rotavirus infected patients in this study (mean age, 2.3 years; range, 0.1 to 14.7 years; see the text). These data contrast with early reports, in which P[6],G4 strains were isolated from neonates without symptoms of gastroenteritis.

^eP[8]+P[4],G1; P[8]+P[4],G2; P[8]+P[4],G4+G2; P[8],G1+G3; P[8],G1+G4; P[8],G1+G9; P[8],G2+G4; P[9],G2+G6; P[4],G1+G2; P[4],G2+G3; P[4],G2+G4; all combinations were represented by one or two specimens.

^fNA, not applicable.