The risks of H. pylori to infants include: causing bad breath, indigestion, distant gastric ulcers, and even an increased risk of gastric cancer. Halitosis: H. pylori is a micro-anaerobic bacterium that multiplies in the stomach and produces the enzyme urease, which breaks down urea and produces a foul-smelling gas, which can cause bad breath, especially when burping and regurgitating. It can cause bad breath. Dyspepsia: A large number of Helicobacter pylori will inhibit the growth of beneficial bacteria in the gastrointestinal tract, leading to an ecological imbalance in the gastrointestinal tract and causing dyspepsia. Increased risk of gastric ulcer and stomach cancer in the long term: gastric ulcer and stomach cancer are not common diseases in infants, but this risk becomes greater as infants grow up. Helicobacter pylori infection in infants may clear up automatically as the child grows older. However, if your child has noticeable symptoms, it is recommended that you seek medical attention.