Yes it took almost 50 years
But it's not such a long period of time , the main reasons
are
- Slow progress in the development of health care sector is the
main reason for reason for the slow progress in area wide
planning
- Lack of planning and execution- many countries did not gave
importance to the development of health care sector so it brought
about a pull back
- The importance of locally arising disease and the statistics
about these conditions were released very slowly. This statistics
about locally arising disease and their importance was understood
largely
- Realisation that when local problem are dealt locally then cost
of care can be reduced. This was found lately
- Enlightenment on the importance of local level hospital and
establishments for area wise division came into notice very
lately
These are the main reason that cause slowing progression