"vulnerable section" is a correct and usable phrase in written English.
For example, you could use it in a sentence such as "This study revealed that elderly people are among the most vulnerable section of the population."
This potentially misses subcontractor arrangements – often a huge and vulnerable section of supply chains.
Syrian refugees make up a particularly vulnerable section of the workforce.
It is worth noting that the public sector is the least vulnerable section of the economy when it comes to insecurity of employment.
In 1993, James B. Stewart wrote about the efforts of locals in Quincy, Illinois to fortify a vulnerable section of the Sny Island levee against the rising river.
Gay people are simply the most vulnerable section in this group of well-heeled newcomers at whom frustration can be easily aimed.
Small female cadaver upper extremities were used to develop the wrist tolerance as a conservative estimate of the most vulnerable section of the driving population.
Calculation results suggest that the vulnerable sections of crankshaft vary with the rotational speed.
Their entry will pose a threat to more vulnerable sections of the UK labour force who will find it hard to compete.
O'Neill said taking HIV-Aids tests out of the clinical environment and into centres of Irish gay life would benefit vulnerable sections of the Republic's LGBT community.
The replacement bricks, each stamped with PYIFA (for Pennsylvania, Yale and the N.Y.U. Institute of Fine Arts), now fill the most vulnerable sections of the old walls.
Admiral Allen on Thursday approved portions of Louisiana's $350 million plan to use walls of sand in an effort to protect vulnerable sections of coastline.
