- Rabies
- Rabies Vaccination
- Raccoon Roundworm Infection
- Radiation and Health
- Radiation Emergencies
- Radon
- Rapid Influenza Diagnostic Testing Training
- Rat Lungworm Disease
- Rat-Bite Fever (RBF)
- Raw Milk
- Recovery Act
- Recreational Water Illnesses (RWI)
- Recreational Water — see Water, Recreational
- Refugee Health — see Immigrant and Refugee Health
- Registry Plus™—Software Programs for Cancer Registries
- Regulation, Legislation and — see Legislation and Regulation
- Relapsing Fever, Louse-borne (LBRF) — see Tick and Louse-borne Relapsing Fevers
- Relapsing Fever, Tick-borne (TBRF) — see Tick and Louse-borne Relapsing Fevers
- Reporting Vaccine Reactions — see Vaccine Adverse Event Reporting System (VAERS)
- Reproductive Health
- Reptiles and Amphibians
- Research Protection Program — see Institutional Review Boards
- Research to Practice (r2p)
- Respirators
- Respiratory Disease Outbreaks, Unexplained — see Unexplained Respiratory Disease Outbreaks (URDO)
- Respiratory Infections in the Workplace
- Respiratory Syncytial Virus Infection (RSV)
- Response and Recovery Activities for Environmental Health (RRA)
- Restaurant Food Safety
- RFP Solicitations
- Rhabdomyolysis and Work
- Rheumatoid Arthritis (RA)
- Ricin
- Rickettsia prowazekii Infection — see Typhus Fevers
- Rickettsia rickettsii Infection — see Rocky Mountain Spotted Fever (RMSF)
- Rickettsia typhi Infection — see Typhus Fevers
- Rickettsia, Spotted Fever Group — see Other Spotted Fever Group Rickettsioses (SFGR)
- Rickettsial Diseases
- Rift Valley Fever (RVF)
- Ringworm
- Riot Control Agents
- River Blindness — see Filarial Worms
- Robotics in the Workplace
- Rocky Mountain Spotted Fever (RMSF)
- Rodents — see Rat-Bite Fever (RBF)
- Ross River Virus Infection
- Rotavirus Infection
- Rotavirus Vaccination
- RSS — see Podcasts
- Rubella (German Measles)
- Rubella (German Measles) Vaccination
- Rubeola — see Measles
- Runny Nose — see Cold, Common
- Rural Health
- Rx Awareness
- Ryan White Act
It's never too early or too late to work towards being the healthiest you.