I have a feeling that this is a mistranslation, not jargon. Other similar usage of "absorption" that I can find was also written by Chinese researchers. edit:

I have a feeling that this is a mistranslation, not jargon. Other similar usage of "absorption" that I can find was also written by Chinese researchers. edit: got downvoted, so adding link to only other "absorption of pneumonia" use that I could find: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5344839/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5344839/ edit2: I could also find some usage of "absorption of inflammation", again also all Chinese researchers.