Wash your hands frequently, especially when spending time at school or in other public places.
Keep a hand disinfectant (e.g., Purell) handy and use it frequently.
Frequently clean surfaces such as countertops, bathroom vanities, faucet handles and shared phones with an appropriate antiseptic cleaner.
If you know you suffer from seasonal allergies, ask your doctor what can be done to minimize your symptoms before they begin.
If you wear contacts, be sure to follow your eye doctor’s instructions for lens care and replacement, and use contact lens solutions properly or consider switching to daily disposable contacts.
When swimming, wear swim goggles to protect yourself from bacteria and other microorganisms in the water that can cause conjunctivitis.
Before showering, using a hot tub or being in water of any kind, remove your contact lenses to avoid trapping bacteria between your eyes and the lenses.