👉 Propionivibrio is a Gram-positive, rod-shaped bacterium commonly found in soil and water bodies. It belongs to the family Lactobacilli, which also includes other types of bacteria like Lactococcus and Bifidobacterium. Propionivibrio primarily causes gastrointestinal infections such as diarrhea, but it can also cause respiratory infections due to its ability to produce harmful substances in the gut lining.