L
- L, L-1, L-2, L-3 — see Lewisite
- Lab — see Division of Laboratory Systems
- Lab Measurements in People — see Biomonitoring
- Laboratory Biosafety Publication
- Laboratory Informatics
- Laboratory Medicine Best Practices (LMBP™)
- Laboratory Medicine Quality Improvement
- Laboratory Quality Control (IQCP) — see Individualized Quality Control Plan
- Laboratory Response Network (LRN) Data Exchange Services
- Laboratory Science and Safety, CDC Office of
- Laboratory Test Directory, Infectious Diseases — see Infectious Diseases Laboratory Test Directory
- Laboratory Training
- Lab Safety at CDC
- LAC (La Crosse Encephalitis)
- La Crosse Encephalitis (LAC)
- La Crosse Encephalitis virus (LACV) — see La Crosse Encephalitis
- LACV (La Crosse Encephalitis virus)
- Laos
- Lassa Fever
- Latex Allergies
- Law, Public Health — see Public Health Law
- LBRF (Relapsing Fever, Louse-borne)
- LCM (Lymphocytic Choriomeningitis)
- Lead
- Lead Poisoning
- Learning Connection, CDC — see CDC Learning Connection
- Learn More. Feel Better
- Learn the Signs, Act Early Campaign
- see also Autism
- see also Child Development and Public Health
- see also L
- Lebanon
- Legionellosis — see Legionnaires' Disease
- Legionnaires' Disease [Legionellosis]
- Legislation and Regulation
- Leishmania Infection [Leishmaniasis]
- Leishmaniasis — see Leishmania Infection
- Leprosy — see Hansen's Disease
- Leptospira Infection [Leptospirosis]
- Leptospirosis — see Leptospira Infection
- Lesbian, Gay, Bisexual, and Transgender (LGBT) Health
- Lesbian Health
- Lesotho
- Lewisite [L, L-1, L-2, L-3]
- LGBT Health — see Lesbian, Gay, Bisexual, and Transgender (LGBT) Health
- Liberia
- Library
- Lice
- Lice, Body — see Body Lice
- Lice, Head — see Head Lice
- Lice, Pubic — see Pubic Lice
- Life Expectancy
- Life Stages
- Life Table Analysis System (LTAS)
- Listeria Infection [Listeriosis]
- Listeriosis — see Listeria Infection
- Liver Disease and Hepatitis — see Viral Hepatitis
- LMBP™ (Laboratory Medicine Best Practices)
- Loa loa Infection — see Loiasis
- Lockjaw — see Tetanus Disease
- Lockjaw Vaccination — see Tetanus (Lockjaw) Vaccination
- Loiasis [Loa loa Infection]
- Long-Acting Anticoagulant — see Super Warfarin
- Long-Term Care Facilities, Infection Prevention in (LTCF) [Healthcare-associated Infections in Long-Term care Facilities]
- Long Work Hours — see Work Schedules
- Lou Gehrig's Disease — see ALS
- Louse-borne Relapsing Fever — see Relapsing Fever, Louse-borne
- LTAS (Life Table Analysis System)
- LTCF (Long-Term Care Facilities, Infection Prevention in)
- LUHF (Lujo Hemorrhagic Fever)
- Lujo Hemorrhagic Fever (LUHF)
- Lung Cancer
- Lupus (SLE) [Systemic lupus erythematosus]
- Lyme Disease [Borrelia burgdorferi Infection]
- Lymphatic Filariasis
- Lymphedema — see Lymphatic Filariasis
- Lymphocytic Choriomeningitis (LCM)