09/16/2026
Fever, sore throat, cough, pink eye…and sometimes diarrhea? It sounds like your child caught three illnesses at once, but it could actually be adenovirus.
Adenovirus is really a family of viruses, and it can cause a surprisingly wide range of symptoms in kids.
According to the American Academy of Pediatrics' Red Book, adenovirus can cause common cold symptoms, sore throat and tonsillitis, ear infections, and something called pharyngoconjunctival fever, essentially fever and sore throat along with conjunctivitis, or pink eye.
Certain adenoviruses can also cause gastroenteritis, meaning vomiting or diarrhea. Less commonly, adenovirus can cause illnesses such as croup, bronchiolitis, pneumonia, or even inflammation of the bladder.
For most otherwise healthy children, treatment is supportive: keeping them hydrated, managing fever and discomfort, and giving them time to recover.
And because adenovirus can spread through respiratory secretions and contaminated hands and surfaces, good handwashing and cleaning frequently touched objects can help limit transmission.
The children we worry more about are young infants, immunocompromised children, or kids who develop signs of more serious illness, because severe adenovirus infections can occasionally occur in these groups.
So if your child isn't drinking well, is having trouble breathing, seems unusually sleepy or ill, or you're concerned about how they're doing, call your pediatrician.
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