Conjunctivitis caused by infections is generally contagious. To prevent the spread of the disease, frequent hand washing and adherence to general hygiene rules are of great importance. Close physical contact (such as shaking hands, kissing) with individuals who have conjunctivitis should be avoided, and the shared use of personal items like towels and makeup should be strictly prevented. Especially in cases of conjunctivitis due to adenovirus infection, the cornea of the eye may also be affected, which can lead to a reduction in vision.