The article I read a month or two ago, about a plague in the Gold Coast area - mentioned that the current plague was also attributed to a very dry season - the typical rainy season tended to drown a lot of the little darlings in their burrows, so abundant food followed by no drowning rains resulted in a serious plague. Then as food out back runs out, they move into houses where food is more available.
When she opens that door, all she needs is Bill Shatner sitting (or lying) in the doorway. 
Yes, I figured it out. I agree it was a pretty weak attempt.