The phrase "allegation spread" is correct and usable in written English.
It can be used when discussing the dissemination or circulation of claims or accusations, often in a legal or journalistic context.
Example: "The allegation spread quickly through social media, prompting a public outcry."
Alternatives: "claim circulated" or "accusation disseminated".
As the allegations spread within the family, branches broke off.
(That allegations spread to #Murdoch's Sun, Times, Sunday Times means "aberration" not strictly accurate word).
The allegations spread panic among the left at an extremely awkward time in the runup to the Socialist party's internal battle for a candidate to beat Sarkozy.
But he kept quiet, even after his arrest, and even as allegations spread that he had supplied weapons to the Taliban, to al-Qaida and to Islamic fundamentalists in Somalia.
On Thursday morning, as news of the allegations spread, the hash tags lospapelesdebarcenas (the Barcenas papers) and RajoyDimision (Rajoy resign) were among the top terms trending among Spanish users of Twitter.
On Thursday, the allegations spread anger and sadness across a country that now sees one of its proudest moments tainted.
Propaganda -- Ideas, facts or allegations spread deliberately to further one's cause or to damage an opposing cause.
In the days following, allegations spread that the emails -- exchanges between the world's leading climate scientists, including some at the National Oceanic and Atmospheric Administration (NOAA) -- revealed the manipulation of scientific data in favor of manmade global warming.
In 2008, crowds stormed police and government headquarters in another part of Guizhou after allegations spread that police had covered up the rape and murder of a local teenage girl, seeking to protect the son of a local official.
The protest was prompted by a June 26 incident in Shaoguan, Guangdong province in which an unknown number of Uyghur workers at a toy factory were killed or injured by Han Chinese after false allegations spread of a rape by Uyghur men of a Han Chinese woman.
