There are now three additional illnesses tied to the investigation, including one death in Michigan as a result of listeriosis, according to the CDC. (fortune.com)
The tuberculosis bacterium tends to stick around in the body, causing additional illness down the line. (sciencemag.org)
Cats that are considered «medically fragile», i.e. have additional illnesses effecting the heart, the kidneys, etc. which is more likely in senior cats (felinehtc.com)