The NIH reports 4 different adenoviruses that make people obese: https://www.ncbi.nlm.nih.gov/pubmed/17908526 https://www.ncbi.nlm.nih.gov/pubmed/17908526 The

The NIH reports 4 different adenoviruses that make people obese: https://www.ncbi.nlm.nih.gov/pubmed/17908526 https://www.ncbi.nlm.nih.gov/pubmed/17908526 The 4 viruses are SMAM-1, Ad-36, Ad-37, and Ad-5. It looks like Wikipedia needs an update; only 1 of the 4 viruses is listed: https://en.wikipedia.org/wiki/Infectobesity https://en.wikipedia.org/wiki/Infectobesity This certainly suggests that you could catch obesity from an obese person. It's actually kind of terrifying.