Feb 28 (Reuters) - Central banks must remain on guard against the potential dangers of secular stagnation and low inflation as price rises driven by cost-push factors do not last long, Bank of Japan (BOJ) Deputy Governor Masazumi Wakatabe said on Monday.
Japan's economy was in deflation for a prolonged period, but sustainable monetary easing has "certainly had a positive effect" on the real economy, Wakatabe said, defending the BOJ's prolonged, ultra-loose monetary policy.
"The mild-inflation regime has not come to an end, and we should say that the potential dangers of secular stagnation and Japanification have not yet passed," he said in a speech delivered at Columbia University in New York.
After adjustment, the rising inflation rate is likely to return to the steady-state inflation rate," he said.
Of course, it is possible that cost-push factors will remain, but whether they will push up the steady-state inflation rate is uncertain," Wakatabe said, adding that it was "well known that cost-push inflation does not last long."