The first group was composed of cag A + and vacA + with subtypes s1am1 + . The second group was composed of cagA - vacA + but with s2m2 + subtypes.
El primero estaba integrado por aquellos que eran cagA+ y vacA+ con subtipos s1am1+ y el segundo grupo cagA- vacA+ pero con subtipos s2m2 +.