The yearly growth rate of the European Monetary Union CPI fell to minus 0.1 percent in September from 0.1 percent in the previous month and 0.3 percent in September last year.

Also, the growth momentum of the UK CPI fell into the negative in September with the yearly growth rate closing at minus 0.1 percent from 0 percent in August and 1.2 percent in September last year.

The growth momentum of China's CPI eased in September with the yearly growth rate falling to 1.6 percent from 2 percent in August.

Deflation Fears Gain Steam

Consequently, many experts are expressing concern regarding the declining growth momentum of the CPI and are of the view that rather than tightening the monetary stance, central banks should loosen their stance further in order to counter the emergence of deflation, which is regarded as a major threat to economic well-being of individuals.