19-2 Helicobacter pylori Is the Cause of Many Ulcers
19-3 Some Escherichia coli Strains Cause Diarrheal Diseases by Colonizing the Intestine, while Others Are Capable of Extraintestinal Infections.
19-4 Salmonella enterica Causes a Common Form of Gastroenteritis
19-5 Vibrio cholerae Is the Cause of Cholera
19-6 Infections with protozoa
19-7 Infections with Helminths
19-8 The hepatitis viruses