- Candida auris infection
- C. diff. Infection
- C. gattii cryptococcosis
- Cache Valley Virus Infection
- Campylobacter Infection (Campy)
- Cancer
- Cancer and Flu
- Influenza
- Cancer Clusters
- Cancer Registries
- Cancer Survivors
- Candida auris infection
- Candida Infection — see Candidiasis
- Candidiasis
- Canine Flu
- Cannabis and Public Health
- Capillaria Infection
- Capillariasis — see Capillaria Infection
- Capnocytophaga infection
- Car seats — see Child Passenger Safety
- Carbon Monoxide Poisoning
- Cardiomyopathy
- Cardiovascular Health — see Heart Disease
- Caregiving
- Carpal Tunnel Syndrome — see Ergonomic and Musculoskeletal Disorders
- Cascade Testing
- CASPER
- Cat Scratch Disease (CSD) — see Bartonella Infection
- Catheter-associated urinary tract infection (CAUTI)
- Cats, Infections from
- CDC and ATSDR Ethics Program Activity — see Ethics and Compliance Activity (ECA)
- CDC Digital & Social Media
- CDC Drug Service — see Drug Service
- CDC History — see History of CDC
- CDC Laboratories
- CDC Learning Connection
- CDC Mission and Vision
- CDC Museum
- CDC Organization
- CDC Speakers Bureau
- CDC STEM — see STEM at CDC
- CDC Surveillance Strategy — see Surveillance Strategy
- CDC TV
- CDC WONDER
- CDC-Hubert Global Health Fellowship
- CDC-INFO
- CDC.gov Features
- Center for Forecasting and Outbreak Analytics (CFA)
- Central Line-associated Bloodstream Infections (CLABSI)
- CERC — see Crisis and Emergency Risk Communication
- Cercarial Dermatitis — see Swimmer’s Itch
- Cerebral Palsy
- Certificate of Confidentiality
- Cervical Cancer
- National Breast and Cervical Cancer Early Detection Program
- Chagas Disease
- Chapare Hemorrhagic Fever (CHHF)
- Chemical Agents
- Chemical and Radiological Surveillance
- Chemical Protective Clothing — see Protective Clothing
- Chemical Safety in the Workplace
- Chemical Weapons Elimination
- Chest Cold — see Acute Bronchitis
- Chest Radiography
- Chickenpox
- Chickenpox Vaccination
- Chikungnya Virus Infection
- Child Abuse and Neglect Prevention
- Child Development and Public Health
- Child Health Statistics
- Child Passenger Safety
- Child Sexual Abuse
- Childhood Arthritis
- Childhood Lead Poisoning
- Childhood Overweight and Obesity
- Children
- Chlamydia
- Chlamydia psittaci Infection
- Chlamydia trachomatis Disease — see Chlamydia
- Chlamyophila pneumoniae Infection
- Chlorine
- Chloroacetophenone (CN) — see Riot Control Agents
- Chlorobenzylidenemalononitrile (CS) — see Riot Control Agents
- Chloropicrin (PS) — see Riot Control Agents
- Cholera
- Cholesterol
- Heart Disease
- Chronic Disease Indicators (CDI)
- Chronic Fatigue Syndrome — see Myalgic Encephalomyelitis/ Chronic Fatigue Syndrome (ME/CFS)
- Chronic Kidney Disease
- Chronic Obstructive Pulmonary Disease (COPD)
- Chronic Symptoms Following Infections
- Chronic Traumatic Encephalopathy — see CTE
- Chronic Wasting Disease (CWD)
- Ciguatera Fish Poisoning
- Ciguatoxin — see Marine Toxins
- Cimex lectularius — see Bed Bugs
- Classic Creutzfeldt-Jakob Disease (CJD)
- Clean Hands
- Cleaning and Custodial Services
- Clear Communication Index
- Climate and Health
- Clinical Growth Charts
- Clinical Immunization Safety Assessment Network (CISA)
- Clinical Laboratory Improvement Advisory Committee (CLIAC)
- Clinical Laboratory Improvement Amendments (CLIA)
- Clinical Laboratory Integration into Healthcare Collaborative (CLIHC™)
- Clinician Outreach and Communication Activity (COCA)
- Clonorchiasis — see Liver Flukes
- Clonorchis Infection — see Liver Flukes
- Clostridioides difficile Infection — see C. diff. Infection
- Clostridium botulinum Infection — see Botulism
- Clostridium difficile Infection — see C. diff. Infection
- Clostridium perfringens Food Poisoning
- Clostridium sordellii Infection
- Clotting Disorders
- Coal Workers’ Health Surveillance Program
- Coal Workers’ Pneumoconioses — see Black Lung
- Coccidioidomycosis — see Valley Fever
- Cold Stress
- Cold Versus Flu
- Cold, Common
- Colorado Tick Fever (CTF)
- Colorectal (Colon) Cancer
- Colorectal Cancer Control Program (CRCCP)
- Common Cold — see Cold, Common
- Community Guide, The
- Community Health Worker Resources
- Community Violence
- Comprehensive Cancer Control
- Concussion — see Traumatic Brain Injury & Concussion (TBI)
- Congenital Hearing Loss — see Hearing Loss in Children
- Congenital Heart Defects
- Conjunctivitis — see Pink Eye
- Construction
- Electrical Safety
- Ergonomic and Musculoskeletal Disorders
- Falls from Elevation
- Mold
- Noise
- Trenching and Excavation
- Contact Lenses
- Contraception — see Birth Control
- Contracts
- Control Banding
- Cooley’s Anemia
- Core State Injury Prevention Program (Core SIPP)
- Coronavirus (CoV)
- Coronavirus Disease 2019
- Correctional Health
- Correctional Workers Safety
- COVID-19
- COVID-19 Vaccine Safety Reporting Systems
- COVID-19 — see Coronavirus Disease 2019
- Coxiella burnetii Infection — see Q Fever
- Creutzfeldt-Jakob Disease (CJD), Classic — see Classic Creutzfeldt-Jakob Disease (CJD)
- Creutzfeldt-Jakob Disease, Variant (vCJD)
- Crimean-Congo hemorrhagic fever (CCHF)
- Crisis and Emergency Risk Communication
- Crohn’s Disease — see Inflammatory Bowel Disease (IBD)
- Cronobacter Infection
- Cruise Ship Sanitation
- Cryptococcosis
- Cryptosporidiosis — see Cryptosporidium Infection (Crypto)
- Cryptosporidium Infection (Crypto)
- CTE
- Traumatic Brain Injury & Concussion
- Cutaneous Larva Migrans (CLM) — see Zoonotic Hookworm
- Cyanide
- Cyanobacterial algal bloom-associated illness — see Harmful Algal Bloom (HAB)-Associated Illness (HAB)
- Cyanogen chloride — see Cyanide
- Cyclospora Infection
- Cyclosporiasis — see Cyclospora Infection
- Cystic echinocccosis — see Echinococcosis
- Cystic Fibrosis
- Cysticercosis
- Cystoisospora Infection — see Cystoisosporiasis
- Cystoisosporiasis
- Cytomegalovirus Infection (CMV)