The phrase "often plagued by" is correct and can be used in written English.
For example, "This small town was often plagued by issues involving poverty and crime."
It was dark, crowded and often plagued by long lines.
Materials synthesized by deposition techniques are often plagued by high levels of residual stress.
The result is that intelligence analysts, no matter how expert, are often plagued by doubts.
Betty was often plagued by poor health and he gave uncomplaining love and support.
As a result, most Egyptian opposition groups remain small and are often plagued by infighting.
* Had irregular sleep, often plagued by insomnia and recurring nightmares about gambling.
The adoration, however, is often plagued by misinformation and wishful thinking.
Currently, clinical devices are often plagued by thickened tissue capsules that form at the intersection of machine and man.
Engineered biosynthetic pathways in microbial hosts are often plagued by the metabolic imbalance that results from unregulated heterologous pathway construction.
People who procrastinate are often plagued by guilt, Ms. Morgenstern said, but beating yourself up is not a solution.
Despite national increases in living standards, the region's repressive, authoritarian regimes are often plagued by corruption and nepotism.
