Infections of the Mouth and Tongue

• Herpes Simplex viruses 1 and 2 (gingivostomatitis or cold sores)
• Candida albicans (oral candidiasis)

Angular Cheilitis

• Candida albicans

Parotitis

• Mumps virus- benign viral parotitis
• Staphylococcus aureus- acute bacterial parotitis

Esophagitis- usually only seen in immunocompromised patients

• Candida albicans*
• Cytomegalovirus (CMV) Herpes Simplex Virus (HSV), Human Immunodeficiency virus (HIV), Varicella Zoster Virus (VZV)

Peptic Ulcer Disease

• Helicobacter pylori

Intestinal Infections- Bacterial (can be inflammatory [blood and mucus small volume; fecal wbc's present] or noninflammatory [large volume watery stools; fecal wbc's NOT present]

Inflammatory ones

• Campylobacter jejuni
• Escherichia coli(EIEC)
• Escherichia coli(EHEC)
• Salmonella typhimurium
• Salmonella typhi(get also fever and headache; sometimes no diarrhea)
• Shigella dysenteriae type 1 (lots of PMN's)
• Shigella sonnei/flexneri
• Yersinia enterocolitica
• Clostridium difficile (can be both inflammatory and non-inflammatory)

Non-inflammatory ones

• Escherichia coli(EPEC)
• Escherichia coli(ETEC)
• Escherichia coli(EAEC)
• Vibrio cholerae
• Clostridium difficile (can be both inflammatory and non-inflammatory)

Parasitic infections of the intestine

• Giardia lamblia*
• Entamoeba histolytica
• Cryptosporidium parvum
• Enterobius vermicularis
• Taenia saginata
• Taenia solium
• Hymenolepis nana
• Ascaris lumbricoides
• Necator americanus
• Strongyloides stercoralis

Viral Gastroenteritis

• Rotavirus (winter infant diarrhea- most common in infants and children)
• Noroviruses* (winter vomiting disease- most common in industrialized countries)
• Norwalk virus (summer diarrhea)
• Adenoviruses
• Astroviruses

Food poisoning- intoxications

• Staphylococcus aureus*
• Bacillus cereus
• Clostridium perfringens
• Clostridium botulinum

Viral Hepatitis- Infections of the Liver

• Hepatitis A virus*
• Hepatitis C virus
• Hepatitis B virus

Infections of the Bones and Joints
 

Osteomyelitis

• Staphylococcus aureus*
• Streptococcus sp.
• Members of the Enterobacteriaceae

Septic arthritis

• Neisseria gonorrhoeae (most common in sexually active young adults)
• Staphylococcus aureus*
• continue to Infections of the Heart