The phrase "a broad outbreak of" is correct and usable in written English.
It can be used when discussing the widespread occurrence of something, typically in the context of diseases or phenomena.
Example: "The health department reported a broad outbreak of influenza in the region this winter."
Alternatives: "a widespread occurrence of" or "a large-scale outbreak of".
The health officials, who declined to identify either victim, said each had been infected in a year in which the city has escaped a broader outbreak of West Nile.
Chinese belligerence over the South China Sea has backfired in recent years by pushing neighbours closer to America, but the issue has shown little sign of igniting a broader outbreak of jingoistic sentiment back home.
The newest snapshot of the inflation climate underscored the Federal Reserve's resolve to continue to lift interest rates in an effort to prevent a broader outbreak of inflation stoked by high energy prices.
In England, University of Birmingham microbial geneticist Nicholas Loman and his staff recently applied WGS to a Salmonella outbreak at Heartlands Hospital, ultimately tracing the source of the outbreak to a broader outbreak affecting other parts of the United Kingdom and Europe.
Two thirds of people in that same poll said they were concerned about the possibility of a broader Ebola outbreak in the United States.
In this study, we compared the performance of six aberration detection methods under a broad set of circumstances by adding simulated outbreak signals to actual daily syndrome counts.
The company said it was asked to produce a "broad range of documents" related to a norovirus outbreak in August at a Simi Valley Chipotle restaurant.
In this sense, the different initial settings cover a broad range of potential landscapes, in which a rabies outbreak could take place.
These outbreaks have often been associated with a broad spectrum of tularemia syndromes, including high proportions of cases with pleuropneumonic and typhoidal presentations.
