H
- H3N2v influenza
- see also Variant Viruses - see Influenza
- H5N1 — see Avian Influenza
- Haemophilus influenzae Serotype b — see Hib Infection
- Hand, Foot, and Mouth Disease (HFMD)
- Hansen's Disease
- Hantavirus Pulmonary Syndrome (HPS)
- Harmful Algal Bloom (HAB)-Associated Illness
- Hazardous Drug Exposures in Healthcare
- Head Lice [Pediculus humanus capitis]
- Healthcare Associated Infections
- Health Disparities in HIV/AIDS, Viral Hepatitis, STDs, and TB
- Health Security — see Global Health Security
- Healthy Pets, Healthy People — see Animal-Related Diseases
- Healthy Weight
- Hearing, Early Detection & Intervention
- Hearing Impairment — see Hearing Loss, Environmental
- Hearing Loss in Children
- Heart Disease and Genetics
- see also Genetics and Genomics
- see also Heart Disease [Cardiovascular Health]
- Heart Disease [Cardiovascular Health]
- Heartland Virus Infection
- Heat Stress
- Hemoglobinopathies
- Hemophilia
- Hemophilia Treatment Centers (HTC)
- Hemorrhagic Fevers, Viral — see Viral Hemorrhagic Fevers
- Hendra Virus Disease (HeV Infection)
- Hepatitis, Viral — see Viral Hepatitis
- Hepatitis A Vaccination
- Hepatitis B Vaccination
- Hereditary Bleeding Disorders — see Hemophilia
- Herpes, Genital — see Genital Herpes
- Herpes B virus — see B virus Infection
- Herpes Simplex Virus Infection — see Genital Herpes
- Herpesvirus B — see B virus Infection
- Herpesvirus simiae — see B virus Infection
- Herpes Zoster — see Shingles
- Herpes Zoster Vaccination — see Shingles Vaccination
- Heterophyes Infection [Heterophyiasis]
- Heterophyiasis — see Heterophyes Infection
- HeV Infection (Hendra Virus Disease)
- HFMD (Hand, Foot, and Mouth Disease)
- Hib Infection [Haemophilus influenzae Serotype b]
- Hib Vaccine (Haemophilus influenzae Serotype b Vaccination)
- High Blood Pressure
- Histoplasma capsulatum Infection [Histoplasmosis]
- Histoplasmosis — see Histoplasma capsulatum Infection
- HIV
- HIV/AIDS — see HIV
- HIV/AIDS and STDs
- Hookworm, Human — see Human Hookworm
- Hookworm, Zoonotic — see Zoonotic Hookworm
- Horses, Infections from
- Hot Tub Rash [Pseudomonas dermatitis Infection]
- HPIV (Human Parainfluenza Viruses)
- HPS (Hantavirus Pulmonary Syndrome)
- HPV and Cancer
- HPV Infection (Human Papillomavirus Infection)
- HPV Vaccination (Human Papillomavirus Vaccination)
- HTC (Hemophilia Treatment Centers)
- Human Ehrlichiosis — see Ehrlichiosis, Human
- Human Hookworm [Ancylostoma duodenale Infection, Necator americanus Infection]
- Human Immunodeficiency Virus — see HIV
- Human Papillomavirus Infection (HPV Infection)
- Human Papillomavirus Vaccination (HPV Vaccination)
- Human Parainfluenza Viruses (HPIV)
- Hymenolepis Infection — see Dwarf Tapeworm
- Hypertension — see High Blood Pressure
- Hyperthermia — see Extreme Heat
- Hypothermia — see Extreme Cold
- [Hearing Impairment]