Infections (for Teens) | Nemours KidsHealth

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How long is mono contagious? Find out about infections that teens can get, with information about how they're spread, signs & symptoms, when to go to the doctor, and more. </p> <div class="category"> <h2 class="kh-category-name"> <button id="catcommon" aria-expanded="false" class="kh-category-title">Common Infections</button> </h2> <ul class="kh-category-single"> <li> <a class="linkFromCat" href="/en/teens/fight-flu.html">5 Ways to Fight the Flu</a> </li> <li> <a class="linkFromCat" href="/en/teens/adenoids.html">Adenoids and Adenoidectomy</a> </li> <li> <a class="linkFromCat" href="/en/teens/cold-sores.html">Cold Sores (HSV-1): Symptoms, Causes & Prevention</a> </li> <li> <a class="linkFromCat" href="/en/teens/colds.html">Coping With Colds</a> </li> <li> <a class="linkFromCat" href="/en/teens/care-about-germs.html">Germs: Bacteria, Viruses, Fungi, and Protozoa</a> </li> <li> <a class="linkFromCat" href="/en/teens/head-lice.html">Head Lice</a> </li> <li> <a class="linkFromCat" href="/en/teens/mono-long.html">How Long Is Mono Contagious?</a> </li> <li> <a class="linkFromCat" href="/en/teens/ingrown.html">Ingrown Toenails</a> </li> <li> <a class="linkFromCat" href="/en/teens/mononucleosis.html">Mononucleosis (Mono)</a> </li> <li> <a class="linkFromCat" href="/en/teens/conjunctivitis.html">Pinkeye (Conjunctivitis)</a> </li> <li> <a class="linkFromCat" href="/en/teens/sinusitis.html">Sinusitis</a> </li> <li> <a class="linkFromCat" href="/en/teens/flu.html">The Flu</a> </li> <li> <a class="linkFromCat" href="/en/teens/tonsillectomy.html">Tonsillectomy</a> </li> <li> <a class="linkFromCat" href="/en/teens/tonsillitis.html">Tonsillitis</a> </li> <li> <a class="linkFromCat" href="/en/teens/uti.html">Urinary Tract Infections</a> </li> <li> <a class="linkFromCat" href="/en/teens/contagious.html">What's the Difference Between Infectious and Contagious?</a> </li> </ul> <h2 class="kh-category-name"> <button id="catcolds-and-flu" aria-expanded="false" class="kh-category-title">Colds & Flu</button> </h2> <ul class="kh-category-single"> <li> <a class="linkFromCat" href="/en/teens/tips-shots.html">5 Tips for Dealing With Shots</a> </li> <li> <a class="linkFromCat" href="/en/teens/fight-flu.html">5 Ways to Fight the Flu</a> </li> <li> <a class="linkFromCat" href="/en/teens/colds.html">Coping With Colds</a> </li> <li> <a class="linkFromCat" href="/en/teens/center/flu-center.html">Flu (Topic Center)</a> </li> <li> <a class="linkFromCat" href="/en/teens/care-about-germs.html">Germs: Bacteria, Viruses, Fungi, and Protozoa</a> </li> <li> <a class="linkFromCat" href="/en/teens/flu-pregnant.html">I'm Pregnant. Should I Get a Flu Shot?</a> </li> <li> <a class="linkFromCat" href="/en/teens/sinusitis.html">Sinusitis</a> </li> <li> <a class="linkFromCat" href="/en/teens/flu.html">The Flu</a> </li> <li> <a class="linkFromCat" href="/en/teens/flu-shot.html">The Flu Vaccine</a> </li> <li> <a class="linkFromCat" href="/en/teens/flu-school.html">When Can I Go Back to School If I Have the Flu?</a> </li> </ul> <h2 class="kh-category-name"> <button id="catbacterial-viral" aria-expanded="false" class="kh-category-title">Bacteria & Viruses</button> </h2> <ul class="kh-category-single"> <li> <a class="linkFromCat" href="/en/teens/bv.html">Bacterial Vaginosis</a> </li> <li> <a class="linkFromCat" href="/en/teens/cellulitis.html">Cellulitis</a> </li> <li> <a class="linkFromCat" href="/en/teens/cholera.html">Cholera</a> </li> <li> <a class="linkFromCat" href="/en/teens/cold-sores.html">Cold Sores (HSV-1): Symptoms, Causes & Prevention</a> </li> <li> <a class="linkFromCat" href="/en/teens/colds.html">Coping With Colds</a> </li> <li> <a class="linkFromCat" href="/en/teens/dengue.html">Dengue Fever</a> </li> <li> <a class="linkFromCat" href="/en/teens/diarrhea.html">Diarrhea</a> </li> <li> <a class="linkFromCat" href="/en/teens/e-coli.html">E. Coli Infections: Diarrhea</a> </li> <li> <a class="linkFromCat" href="/en/teens/encephalitis.html">Encephalitis</a> </li> <li> <a class="linkFromCat" href="/en/teens/fighting-germs.html">Fighting Germs</a> </li> <li> <a class="linkFromCat" href="/en/teens/food-poisoning.html">Food Poisoning</a> </li> <li> <a class="linkFromCat" href="/en/teens/care-about-germs.html">Germs: Bacteria, Viruses, Fungi, and Protozoa</a> </li> <li> <a class="linkFromCat" href="/en/teens/hepatitis-a.html">Hepatitis A</a> </li> <li> <a class="linkFromCat" href="/en/teens/std-hepatitis.html">Hepatitis B</a> </li> <li> <a class="linkFromCat" href="/en/teens/hepatitis-c.html">Hepatitis C</a> </li> <li> <a class="linkFromCat" href="/en/teens/lyme-risk-teen.html">How Can I Prevent Lyme Disease?</a> </li> <li> <a class="linkFromCat" href="/en/teens/mono-long.html">How Long Is Mono Contagious?</a> </li> <li> <a class="linkFromCat" href="/en/teens/impetigo.html">Impetigo</a> </li> <li> <a class="linkFromCat" href="/en/teens/lyme-disease.html">Lyme Disease</a> </li> <li> <a class="linkFromCat" href="/en/teens/meningitis.html">Meningitis</a> </li> <li> <a class="linkFromCat" href="/en/teens/molluscum-contagiosum.html">Molluscum Contagiosum</a> </li> <li> <a class="linkFromCat" href="/en/teens/mrsa.html">MRSA</a> </li> <li> <a class="linkFromCat" href="/en/teens/osteomyelitis.html">Osteomyelitis</a> </li> <li> <a class="linkFromCat" href="/en/teens/peritonsillar-abscess.html">Peritonsillar Abscess</a> </li> <li> <a class="linkFromCat" href="/en/teens/conjunctivitis.html">Pinkeye (Conjunctivitis)</a> </li> <li> <a class="linkFromCat" href="/en/teens/pneumonia.html">Pneumonia</a> </li> <li> <a class="linkFromCat" href="/en/teens/prep.html">PrEP (Pre-Exposure Prophylaxis)</a> </li> <li> <a class="linkFromCat" href="/en/teens/rocky-mountain.html">Rocky Mountain Spotted Fever</a> </li> <li> <a class="linkFromCat" href="/en/teens/sinusitis.html">Sinusitis</a> </li> <li> <a class="linkFromCat" href="/en/teens/abscess.html">Skin Abscesses</a> </li> <li> <a class="linkFromCat" href="/en/teens/video-strep.html">Strep Test (Video)</a> </li> <li> <a class="linkFromCat" href="/en/teens/strep-throat.html">Strep Throat</a> </li> <li> <a class="linkFromCat" href="/en/teens/swimmers-ear.html">Swimmer's Ear (External Otitis)</a> </li> <li> <a class="linkFromCat" href="/en/teens/tetanus.html">Tetanus</a> </li> <li> <a class="linkFromCat" href="/en/teens/flu.html">The Flu</a> </li> <li> <a class="linkFromCat" href="/en/teens/tonsillitis.html">Tonsillitis</a> </li> <li> <a class="linkFromCat" href="/en/teens/tss.html">Toxic Shock Syndrome</a> </li> <li> <a class="linkFromCat" href="/en/teens/uti.html">Urinary Tract Infections</a> </li> <li> <a class="linkFromCat" href="/en/teens/warts.html">Warts</a> </li> <li> <a class="linkFromCat" href="/en/teens/contagious.html">What's the Difference Between Infectious and Contagious?</a> </li> </ul> <h2 class="kh-category-name"> <button id="catfungal" aria-expanded="false" class="kh-category-title">Fungal Infections</button> </h2> <ul class="kh-category-single"> <li> <a class="linkFromCat" href="/en/teens/athletes-foot.html">Athlete's Foot</a> </li> <li> <a class="linkFromCat" href="/en/teens/y-infection.html">Can You Get a Yeast Infection After Having Sex?</a> </li> <li> <a class="linkFromCat" href="/en/teens/fighting-germs.html">Fighting Germs</a> </li> <li> <a class="linkFromCat" href="/en/teens/care-about-germs.html">Germs: Bacteria, Viruses, Fungi, and Protozoa</a> </li> <li> <a class="linkFromCat" href="/en/teens/jock-itch.html">Jock Itch</a> </li> <li> <a class="linkFromCat" href="/en/teens/pityriasis-versicolor.html">Pityriasis Versicolor</a> </li> <li> <a class="linkFromCat" href="/en/teens/ringworm.html">Ringworm: Signs, Causes & Treatment</a> </li> <li> <a class="linkFromCat" href="/en/teens/yeast-infections.html">Vaginal Yeast Infections</a> </li> <li> <a class="linkFromCat" href="/en/teens/contagious.html">What's the Difference Between Infectious and Contagious?</a> </li> </ul> <h2 class="kh-category-name"> <button id="catstds" aria-expanded="false" class="kh-category-title">Sexually Transmitted Diseases</button> </h2> <ul class="kh-category-single"> <li> <a class="linkFromCat" href="/en/teens/bv.html">Bacterial Vaginosis</a> </li> <li> <a class="linkFromCat" href="/en/teens/infections.html">Can Fingering or Oral Sex Cause an Infection?</a> </li> <li> <a class="linkFromCat" href="/en/teens/hsv1-sores.html">Can You Get Genital Herpes From a Cold Sore?</a> </li> <li> <a class="linkFromCat" href="/en/teens/3shots.html">Can You Still Get Genital Warts If You've Had All the HPV Shots?</a> </li> <li> <a class="linkFromCat" href="/en/teens/std-chlamydia.html">Chlamydia</a> </li> <li> <a class="linkFromCat" href="/en/teens/fighting-germs.html">Fighting Germs</a> </li> <li> <a class="linkFromCat" href="/en/teens/std-herpes.html">Genital Herpes</a> </li> <li> <a class="linkFromCat" href="/en/teens/std-warts.html">Genital Warts (HPV)</a> </li> <li> <a class="linkFromCat" href="/en/teens/std-gonorrhea.html">Gonorrhea</a> </li> <li> <a class="linkFromCat" href="/en/teens/hepatitis.html">Hepatitis</a> </li> <li> <a class="linkFromCat" href="/en/teens/std-hepatitis.html">Hepatitis B</a> </li> <li> <a class="linkFromCat" href="/en/teens/std-hiv.html">HIV and AIDS</a> </li> <li> <a class="linkFromCat" href="/en/teens/aids.html">How Do People Get AIDS?</a> </li> <li> <a class="linkFromCat" href="/en/teens/hiv-tests.html">How to Get Tested for HIV</a> </li> <li> <a class="linkFromCat" href="/en/teens/hpv-vaccine.html">HPV Vaccine</a> </li> <li> <a class="linkFromCat" href="/en/teens/std-pid.html">Pelvic Inflammatory Disease (PID)</a> </li> <li> <a class="linkFromCat" href="/en/teens/prep.html">PrEP (Pre-Exposure Prophylaxis)</a> </li> <li> <a class="linkFromCat" href="/en/teens/std-lice.html">Pubic Lice (Crabs)</a> </li> <li> <a class="linkFromCat" href="/en/teens/std.html">STDs (Sexually Transmitted Diseases)</a> </li> <li> <a class="linkFromCat" href="/en/teens/std-syphilis.html">Syphilis</a> </li> <li> <a class="linkFromCat" href="/en/teens/the-talk.html">Talking to Your Partner About STDs</a> </li> <li> <a class="linkFromCat" href="/en/teens/std-trichomoniasis.html">Trichomoniasis</a> </li> </ul> <h2 class="kh-category-name"> <button id="catskin-rashes" aria-expanded="false" class="kh-category-title">Skin Infections & Rashes</button> </h2> <ul class="kh-category-single"> <li> <a class="linkFromCat" href="/en/teens/athletes-foot.html">Athlete's Foot</a> </li> <li> <a class="linkFromCat" href="/en/teens/bedbugs.html">Bedbugs</a> </li> <li> <a class="linkFromCat" href="/en/teens/cellulitis.html">Cellulitis</a> </li> <li> <a class="linkFromCat" href="/en/teens/cold-sores.html">Cold Sores (HSV-1): Symptoms, Causes & Prevention</a> </li> <li> <a class="linkFromCat" href="/en/teens/eczema.html">Eczema</a> </li> <li> <a class="linkFromCat" href="/en/teens/head-lice.html">Head Lice</a> </li> <li> <a class="linkFromCat" href="/en/teens/lyme-risk-teen.html">How Can I Prevent Lyme Disease?</a> </li> <li> <a class="linkFromCat" href="/en/teens/impetigo.html">Impetigo</a> </li> <li> <a class="linkFromCat" href="/en/teens/jock-itch.html">Jock Itch</a> </li> <li> <a class="linkFromCat" href="/en/teens/lyme-disease.html">Lyme Disease</a> </li> <li> <a class="linkFromCat" href="/en/teens/molluscum-contagiosum.html">Molluscum Contagiosum</a> </li> <li> <a class="linkFromCat" href="/en/teens/pityriasis-versicolor.html">Pityriasis Versicolor</a> </li> <li> <a class="linkFromCat" href="/en/teens/ringworm.html">Ringworm: Signs, Causes & Treatment</a> </li> <li> <a class="linkFromCat" href="/en/teens/rocky-mountain.html">Rocky Mountain Spotted Fever</a> </li> <li> <a class="linkFromCat" href="/en/teens/abscess.html">Skin Abscesses</a> </li> <li> <a class="linkFromCat" href="/en/teens/tss.html">Toxic Shock 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Infections (for Teens) | Nemours KidsHealth