In 1994, the National Institutes of Health stated most recurrent duodenal and gastric ulcers were caused by H. pylori, and recommended antibiotics be included in the treatment regimen.
En 1994, os Institutos Nacionais da Saúde dos Estados Unidos (National Institutes of Health) informaron que as úlceras gástricas máis comúns eran causadas por H. pylori, e recomendaron o uso de antibióticos, sendo incluídos no réxime de tratamento.