B
- B. cepacia infection (Burkholderia cepacia Infection)
- Babesia Infection — see Babesiosis
- Babesiosis [Babesia Infection]
- Bacillus anthracis Infection — see Anthrax
- Back Belts — see Ergonomic and Musculoskeletal Disorders
- Bacterial Meningitis
- see also Meningitis
- see also Meningococcal Disease
- Bacterial Vaginosis (BV)
- Balamuthia Infection [Balamuthia mandrillaris Infection]
- Balamuthia mandrillaris Infection — see Balamuthia Infection
- Balantidiasis — see Balantidium Infection
- Balantidium Infection [Balantidiasis]
- Bartonella bacilliformis Infection — see Carrión’s disease
- Bartonella quintana Infection — see Trench fever
- Baylisascaris Infection — see Raccoon Roundworm Infection
- BCG (Tuberculosis Vaccine)
- Bilharzia — see Schistosomiasis
- Bioterrorism Agents/Diseases
- Bird Flu — see Avian Influenza
- Birth Defects
- Black Lung [Coal Workers' Pneumoconioses]
- Blastocystis hominis Infection — see Blastocystis Infection
- Blastocystis Infection [Blastocystis hominis Infection]
- blood clot
- Blood Disorders
- Body Lice [Pediculus humanus corporis]
- Borrelia burgdorferi Infection — see Lyme Disease
- Borreliosis, Louse-borne — see Relapsing Fever, Louse-borne
- Borreliosis, Tick-borne — see Relapsing Fever, Tick-borne
- Botulism [Clostridium botulinum Infection]
- Bovine Spongiform Encephalopathy (BSE)
- Brainerd Diarrhea
- Breast and Ovarian Cancer and Family Health History
- see also Breast and Ovarian Cancer and Family Health History
- Breast Cancer
- see also National Breast and Cervical Cancer Early Detection Program (NBCCEDP)
- Breastfeeding
- Bronchiolitis — see Respiratory Syncytial Virus Infection
- Bronchitis
- Brucella Infection [Brucellosis]
- Brucellosis — see Brucella Infection
- BSE (Bovine Spongiform Encephalopathy)
- BSE (Mad Cow Disease)
- Burkholderia cepacia Infection (B. cepacia infection)
- Burkholderia mallei — see Glanders
- Burkholderia pseudomallei Infection — see Melioidosis
- BV (Bacterial Vaginosis)
- B virus Infection [Herpes B virus]