Would you please give the link to this article, thank you.
This article is one I would like to link to the source as gathering info. on feral cats.
Here you are FRiend. http://losangeles.cbslocal.com/2012/05/29/officials-try-to-round-up-feral-cats-reduce-flea-population-to-stave-off-oc-typhus-threat/