Infectious diseases are disorders that are caused by organisms, usually microscopic in size, such as bacteria, viruses, fungi, or parasites that are passed, directly or indirectly, from one person …

6 days ago · infectious disease, in medicine, a process caused by an agent, often a type of microorganism, that impairs a person’s health. In many cases, infectious disease can be …

Infectious diseases can be spread, directly or indirectly, from person to person, from animal to animal, or from animals to humans (zoonotic diseases), or through environmental exposure. …

Jun 12, 2025 · Germs are a part of everyday life. Germs live in our air, soil, water and in and on our bodies. Some germs are helpful, others are harmful. An infection occurs when germs enter …

What Are Infectious Diseases? Infectious diseases are illnesses caused by harmful organisms (pathogens or germs) that get into your body from the outside. Germs that cause infectious …

Pathology refers to the abnormality induced by an infection, and pathogenesis to the events producing the pathology. A pathogenic microorganism is a microbe that can cause pathology. …

This comprehensive guide delves into the basics of infectious diseases, exploring their causes, modes of transmission, prevention, and control. Infectious diseases are illnesses caused by …

Microorganisms are tiny living creatures, such as bacteria and viruses. Microorganisms are present everywhere. Despite their overwhelming abundance, relatively few of the thousands of …

Diseases caused by the introduction of infectious agents such as bacteria, viruses, parasites, or fungi into the body.

Infections caused by germs are a major safety and health hazard. Some infections are minor and cause short illnesses. Other infections are serious and can cause death. Germs do not …