When can I go back to class after strep throat?

The rule most schools and clinicians use

Strep throat is a bacterial infection spread by droplets and by sharing drinks and food. People with strep are generally no longer considered contagious after about 12 to 24 hours of antibiotics, as long as the fever has broken and they feel well enough to function. Until then, stay out of class, the dining hall and shared spaces if you can.

Why get a strep test first?

Most sore throats are viral, and antibiotics do nothing for a virus. A rapid strep test at student health tells you in minutes. A positive test means antibiotics, which also lower the odds of rare complications like rheumatic fever. A negative test may be followed by a throat culture. Our home strep testing guide covers what at-home options can and cannot tell you.

What should I do in the dorm?

• Use your own cups, bottles and utensils
• Wash hands often and cover coughs
• Replace your toothbrush after you have been on antibiotics for a couple of days
• Do not share vapes, lip balm or food
• Tell your roommate, so they can watch for symptoms

What about sports, labs and exams?

• Ask your trainer about their own return rules, many teams require 24 hours on antibiotics plus no fever
• If you miss an exam, ask early for a makeup and bring a clinician's note
• Skip clinical placements or work with food until you are cleared

Do I need to finish the antibiotics?

Take every dose of the antibiotic, even after you feel better. Stopping early can let the infection come back, and it raises the risk of complications. If you are not better after 2 to 3 days on antibiotics, call your clinic.

When should I go to urgent care or the ER?

Trouble breathing, chest pain, confusion, a stiff neck with fever, or being unable to keep fluids down are reasons to go to urgent care or the ER, or call 911. A sore throat with drooling or trouble swallowing saliva, or a muffled voice, can mean an abscess and needs same-day care.

If you are not sure what you have, our AI doctor asks a few questions and sends you a care note you can bring to student health.

Common questions from students

How long am I contagious with strep? About 24 hours after starting antibiotics if you have no fever. Without treatment, it can be 2 to 3 weeks.

Can I get strep from sharing a drink? Yes. Strep spreads through droplets and shared drinks and utensils.

Can I skip antibiotics and let it go away? Strep can clear on its own, but untreated strep can cause complications and stays contagious for longer. See does strep go away on its own.

Do I need to be retested? Usually not, if you feel better after treatment.

Can I go to a party on day two of antibiotics? You may be past the point of being contagious, but you will likely still feel rough. Rest helps.

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