It was a respiratory infection. His lung tissue was full of mucous and bubbles. Took a sample and mounted it for microscopy....areas of gritty black material densely clustered ( assuming it's bacteria). Can't figure out how he got a resp. infect. If anything, the humidity was too low. Unless he aspirated some liquid from syringe feedings. I was giving him Pedialyte EOD for a while. Any idea what I did wrong?