animals in the Harrison Street corridor tested positive in recent months.

https://en.wikipedia.org/wiki/Leptospirosis

Signs and symptoms can range from none to mild (headaches, muscle pains, and fevers) to severe (bleeding in the lungs or meningitis).

This appears to be an outbreak of testing.

The wikipedia entry links to a movie that was made about this bacteria in Brazil.

"Rat fever" redirects here. For the 2011 Brazilian film, see Rat Fever.

Sounds scary. They should make a movie called "Testing Fever."