Final answer:
Bloody diarrhea is a common symptom associated with gastrointestinal infections caused by various pathogens such as bacteria, viruses, and parasites.
Step-by-step explanation:
Bloody diarrhea is a common symptom associated with gastrointestinal infections caused by various pathogens. Pathogens such as Vibrio cholerae, Listeria monocytogenes, Campylobacter jejuni, and enteropathogenic Escherichia coli (EPEC) bacteria can cause bloody diarrhea. Additionally, viral pathogens like norovirus and rotavirus can also lead to bloody diarrhea. Parasitic pathogens such as Giardia lamblia and Cryptosporidium parvum can also cause this symptom.