"widespread cause" is correct and usable in written English.
You can use this term when referring to a cause of an event or phenomenon that is shared, understood, or experienced by many people. For example: The devastating effects of climate change have become a widespread cause for concern.
The most widespread cause of hospital infections, methicillin-resistant Staphylococcus aureus, or MRSA, is one such example.
The shareholder action comes as figures obtained by the Bureau of Investigative Journalism reveal an increase in cases of a strain of campylobacter – Britain's most widespread cause of food poisoning – resistant to a key antibiotic in human patients.
Operating profits rose by 36% to £8.4 billion, and the loss-making write-down of assets did not include the value of its third-generation licences, a widespread cause of misery for competitors.See article: The next generation of mobile phonesSpain's Telefonica launched a bid for Terra Lycos.
Human cytomegalovirus (HCMV) is the most widespread cause of congenital infection.
As this biofouling is compensated by the concomitant improvement of the bioanodes it cannot be detected on the power curves and may be a widespread cause of performance underestimation.
When considered with other findings, our results suggest that primer mismatch may be a widespread cause of genotyping failure, and might be particularly problematic in countries with greater rotavirus diversity.
"The reaches of these storms and the impact were very widespread, causing a lot of anxiety in the travel industry," was as far as he would go.
Salmonella Enteritidis and Salmonella Typhimurium are the most widespread causes of salmonellosis and gastrointestinal diseases worldwide.
However, an emergent strain of ZIKV has become widespread, causing severe pre- and post-natal neurological defects.
High amplitude fluid sloshing is one of the widespread causes of steel oil storage tanks during strong earthquakes addressed as an important failure mode.
Fleas and ticks are common and widespread causes of physical irritation.
