09/02/2026
Your child wakes up with a pink, goopy eye. So… are they contagious for 24 hours? Three days? A week? The answer is: it depends on what's causing the pink eye.
"Pink eye," or conjunctivitis, isn't one single illness.
If it's allergic conjunctivitis, it isn't contagious at all.
If it's caused by a virus—which is very common in school-aged children—it can spread while your child is having symptoms. Think of viral pink eye a little like the common cold: kids may actually be contagious before you even realize what's going on.
And here's something parents are often surprised to hear: antibiotic eye drops don't treat viral pink eye or make it less contagious. Adenovirus, a common cause of viral conjunctivitis, can even remain contagious for quite a while.
Bacterial conjunctivitis is different and may sometimes need antibiotic drops, depending on the situation.
So does every child with pink eye need to stay home until they've had drops for 24 hours? Not necessarily. School and daycare policies vary, but AAP parent guidance notes that many cases are viral and shouldn't automatically require antibiotics or prolonged exclusion.
Your best defense? Lots of handwashing, avoid sharing towels and pillows, and try to keep those little hands away from the eyes.
If you're unsure what type your child has, that's a great reason to check in with your pediatrician.
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