Conjunctivitis is a highly contagious infection which is caused by a virus or bacteria. You can get it by touching your eye after touching contaminated surfaces. Mumbai has seen 20%  rise in Conjunctivitis cases while Delhi, Ahmedabad and other cities are affected too. According to Doctors, a majority of these cases are attributed to adenovirus. Experts said that 40% of the affected are children. 

Source: The Times of India - July 27, 2023