Infectious Diseases are harmful for everyone it enter through the viruses in the body when it comes we don’t know which is more dangerous to the health. It caused by microorganisms like bacteria, viruses, parasites or fungi the diseases can be spread, directly or indirectly from one person to another. They are normally harmless or even helpful, but under certain conditions, some may cause disease.
Humans can also become infected following exposure to an infected animal that harbors a pathogenic organism that is capable of infecting humans.
Lower respiratory and diarrheal diseases are caused by a variety of infectious agents.