Clues to the answer exist in H. pylori DNA, and its relationships with other gastrointestinal bacteria.
The majority of articles mentioned in my editorial are included in the collection below. In addition, I cite
Flahou B. et al. (2014) Diversity of zoonotic enterohepatic Helicobacter species and detection of a putative novel gastric Helicobacter species in wild and wild-born captive chimpanzees and western lowland gorillas. Vet Microbiol. 2014 Nov 7;174(1-2):186-94. doi: 10.1016/j.vetmic.2014.08.032. Epub 2014 Sep 10.
The majority of articles mentioned in my editorial are included in the collection below. In addition, I cite
Flahou B. et al. (2014) Diversity of zoonotic enterohepatic Helicobacter species and detection of a putative novel gastric Helicobacter species in wild and wild-born captive chimpanzees and western lowland gorillas. Vet Microbiol. 2014 Nov 7;174(1-2):186-94. doi: 10.1016/j.vetmic.2014.08.032. Epub 2014 Sep 10.