Answer:
Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They're normally harmless or even helpful. But under certain conditions, some organisms may cause disease.
<span>How do you visually recorgnise conjunctivitis ?
-itching of the eyelids can be swollen (eyelid edema);
-a very moderate pain of the eye;
-a feeling of grittiness;
-a clear or purulent discharge;
-glued eyelids of the morning on waking;
<span>-blurred vision</span></span>
