Table 1. Frequencies¹ of the strains that were most abundant (≥1%) and/or were present in both the 2002 and 2003 vintages.

2003 strains	Frequencies in 2003	2002 strains2	Frequencies in 2002	Frequency variation (%2003-%2002)
I03	15.55	XXIII02	14.20	+1.35
IV03	10.95	XIII02	12.50	−1.55
V03	9.01	IX02	7.67	+1–.34
XIII03	5.65	XI02	4.26	+1.39
LXXIV03	6.01	-	-	+6.01
XVIII03	4.24	VIII02	4.55	−0.31
VII03	3.18	XXII02	1.99	+1.19
II03	2.83	VII02	1.70	+1.13
CXXII03	2.12	-	-	+2.12
XI03	1.94	LIX02	4.55	−2.61
VI03	1.77	LXVI02	0.85	+0.92
LXXXVI03	1.41	XXVII02	0.57	+0.84
XV03	1.24	-	-	+1.24
CVI03	1.06	-	-	+1.06
XXVI03	1.06	-	-	+1.06
XCVII03	0.71	LXXIV02	0.57	+0.14
CIV03	0.36	XXVIII02	0.28	−0.70
-	-	XLI02	10.80	−10.80
-	-	XVII02	2.57	−2.56
-	-	I02	2.27	−2.27
-	-	XX02	1.70	−1.70
-	-	XV02	1.42	−1.42

¹Percent of isolates with the indicated mt-DNA RFLP pattern, over the total number of isolates.

²strains with the same mt-RFLP pattern in 2002 and 2003, are in the same row.