What was Duck dying of?
It wasn't "the walker virus", right? Everyone is already infected with that.
So it was just an ordinary infection you'd get if a bite wound comes in contact with a corpse's mouth. I doubt it was rabies. Apparently corpses often spread hepatitis B and hepatitis C, HIV, enteric intestinal pathogens, tuberculosis, cholera and others. Of these TB seems the most likely, it's unlikely duck was vaccinated against it, and it has similar symptom to what was displayed. If it were TB then Duck could of been treated by a long regime of anti-biotics. TB has a 50% fatality rate so although likely duck's death wasn't certain, if they'd have found some medicine he could've had a chance. Although if it were TB why didn't Kaatja realise? Shock maybe?
Thoughts? Other Ideas as to what it may have been?