Why does medicinal waste fall under the hazardous category?

Hazardous wastes are those substances which cause harm to human beings, animals, plants and the environment. These wastes are those generated in hospital's, clinic, laboratories and other such institutes.These have to be handled and disposed of very carefully. As well aware, these places are frequented by sick people whose tissues are loaded with infected germs. Waste coming from material in contact with those infections is also very infectious and can cause many diseases if not handled and and disposed off properly