C
G
H
- Haemophilus influenzae type B (Hib)
- Hantavirus
- Head Lice (Pediculosis)
- Hepatitis
- Herpes
- HIV/AIDS
- Human granulocytic ehrlichiosis (HGE) - see Anaplasmosis (HGA)
- Human Papillomavirus
M
P
S
- Salmonella
- Salmonellosis from Pet Reptiles and Amphibians
- Scabies
- Shiga Toxin Producing Escherichia coli
- Shigella
- Smallpox
- Strep - see Group A Streptococcal Disease
- Syphilis