Who needs a flu shot? How long is mono contagious? This section has tons of articles about infections that teens can get, with information about how they're spread, signs and symptoms, when to go to the doctor, and more.

Colds & Flu

• Bird Flu (Avian Flu)
• Bronchitis
• Coping With Colds
• Flu Facts
• H1N1 (Swine) Flu
• Sinusitis
• Swine Flu: Don't Be Scared - Be Prepared
• The Flu Vaccine
• What to Do If You Get H1N1 (Swine) Flu
• What to Do if You Get the Flu
• When Can I Go Back to School If I Have the Flu?
• Why Should I Care About Germs?

Common Infections

• Bronchitis
• Coping With Colds
• Enlarged Adenoids
• Flu Facts
• How Long Is Mono Contagious?
• Ingrown Toenails
• Mononucleosis
• Pinkeye (Conjunctivitis)
• Sinusitis
• Tonsillitis
• Tonsils and Tonsillectomies
• Urinary Tract Infections
• What to Do if You Get the Flu
• What's the Difference Between Infectious and Contagious?

Sexually Transmitted Diseases

• About Sexually Transmitted Diseases (STDs)
• Chlamydia
• Genital Herpes
• Genital Warts (HPV)
• Gonorrhea
• HIV Testing Resources
• HIV and AIDS
• Hepatitis
• Hepatitis B (HBV)
• How Do People Get AIDS?
• Pelvic Inflammatory Disease (PID)
• Pubic Lice (Crabs)
• Syphilis
• Trichomoniasis

Bacterial & Viral Infections

• Anthrax
• Bronchitis
• Cellulitis
• Coping With Colds
• Encephalitis
• Flu Facts
• Gastrointestinal Infections and Diarrhea
• H1N1 (Swine) Flu
• How Long Is Mono Contagious?
• Impetigo
• Lyme Disease
• Mad Cow Disease
• Meningitis
• Osteomyelitis
• Pets and Your Health
• Pinkeye (Conjunctivitis)
• Pneumonia
• Rocky Mountain Spotted Fever
• Salmonellosis
• Shigellosis
• Should I Worry About MRSA?
• Sinusitis
• Smallpox
• Staph Infections
• Strep Test (Video)
• Strep Throat
• Swimmer's Ear (External Otitis)
• Swine Flu: Don't Be Scared - Be Prepared
• Tetanus
• Tonsillitis
• Toxic Shock Syndrome
• Tuberculosis
• Urinary Tract Infections
• Warts
• West Nile Virus
• What to Do if You Get the Flu
• What's My Lyme Disease Risk?
• What's the Difference Between Infectious and Contagious?

Fungal Infections

• Athlete's Foot
• Jock Itch
• Pets and Your Health
• Ringworm
• Vaginal Yeast Infections
• What's the Difference Between Infectious and Contagious?

Skin Infections & Rashes

• All About Eczema
• Anthrax
• Athlete's Foot
• Cellulitis
• Cold Sores (HSV-1)
• Impetigo
• Jock Itch
• Lyme Disease
• Pets and Your Health
• Ringworm
• Rocky Mountain Spotted Fever
• Scabies
• Smallpox
• Toxic Shock Syndrome
• What's My Lyme Disease Risk?
• What's the Difference Between Infectious and Contagious?

Stomach & Intestinal Infections

• Anthrax
• Appendicitis
• Gastrointestinal Infections and Diarrhea
• Pets and Your Health
• Salmonellosis
• Stomachaches
• The 5-Second Rule
• What's the Difference Between Infectious and Contagious?