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.

• Flu Center

Colds & Flu

• 5 Tips for Surviving Shots
• 5 Ways to Fight the Flu
• Bronchitis
• Coping With Colds
• Flu Center
• Flu Facts
• Sinusitis
• The Flu Vaccine
• 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

• 5 Ways to Fight the Flu
• Bronchitis
• Cold Sores (HSV-1)
• Coping With Colds
• Enlarged Adenoids
• Finding Low-Cost Medical Care
• Flu Center
• Flu Facts
• Head Lice
• 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)
• Bacterial Vaginosis
• Chlamydia
• Finding Low-Cost Medical Care
• Genital Herpes
• Genital Warts (HPV)
• Gonorrhea
• HIV Testing Resources
• HIV and AIDS
• Hepatitis
• Hepatitis B (HBV)
• How Do People Get AIDS?
• Molluscum Contagiosum
• Pelvic Inflammatory Disease (PID)
• Pubic Lice (Crabs)
• Syphilis
• Trichomoniasis

Bacterial & Viral Infections

• Abscess
• Anthrax
• Bacterial Vaginosis
• Bronchitis
• Cellulitis
• Cholera
• Cold Sores (HSV-1)
• Coping With Colds
• Dengue Fever
• E. Coli
• Encephalitis
• Flu Facts
• Food Poisoning
• Gastrointestinal Infections and Diarrhea
• Hib Disease (Haemophilus Influenzae Type b)
• How Long Is Mono Contagious?
• Impetigo
• Lyme Disease
• MRSA
• Mad Cow Disease
• Meningitis
• Molluscum Contagiosum
• Osteomyelitis
• Paronychia
• Peritonsillar Abscess
• Pets and Your Health
• Pinkeye (Conjunctivitis)
• Pneumonia
• Rabies
• Rocky Mountain Spotted Fever
• Salmonellosis
• Shigellosis
• Shingles
• Sinusitis
• Smallpox
• Staph Infections
• Strep Test (Video)
• Strep Throat
• Swimmer's Ear (External Otitis)
• 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

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

Skin Infections & Rashes

• Abscess
• Anthrax
• Athlete's Foot
• Bedbugs
• Cellulitis
• Cold Sores (HSV-1)
• Eczema
• Erythema Multiforme
• Head Lice
• Impetigo
• Jock Itch
• Lyme Disease
• Molluscum Contagiosum
• Paronychia
• Pets and Your Health
• Ringworm
• Rocky Mountain Spotted Fever
• Scabies
• Shingles
• Smallpox
• Toxic Shock Syndrome
• What's My Lyme Disease Risk?
• What's the Difference Between Infectious and Contagious?

Stomach & Intestinal Infections

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