Inflation in the euro zone rose to double digits for the first time in October, driven by energy and food prices. Within a year, consumer prices climbed by 10.6 percent, according to the statistics office Eurostat. Inflation has never been higher since the introduction of the euro in 1999. In September, the inflation rate was 9.9 percent. The pressure on the currency watchdogs of the European Central Bank (ECB) in Frankfurt should therefore continue not to let up on the course of interest rate hikes initiated in July.