Germany's tally of H1N1 influenza cases surged Thursday as the summer holiday season gained stride, with officials saying most new victims had caught the virus on holiday abroad, according to dpa. The Robert Koch Institute in Berlin, which tracks the disease, said 2,500 Germans have come down with swine flu so far, a jump by one third from the tally Wednesday. Unlike other influenza types which mainly hit in the autumn and winter, H1N1 has spread quickly in the northern summer.
