Communicable diseases, also known as infectious diseases or transmissible diseases, are illnesses that result from the infection, presence and growth of pathogenic (capable of causing disease) biologic agents in an individual human or other animal host..
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What are infectious diseases?
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. Some infectious diseases can be passed from person to person.
What causes communicable disease?
A communicable disease is a disease that spreads from one person or animal to another. Pathogens such as viruses, bacteria, and fungi cause these diseases. Communicable diseases can transmit through contact with bodily fluids, insect bites, contaminated surfaces, water, and foods, or through the air.
What causes disease?
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.
What are disease causing microorganisms called?
Microbes that cause disease are called pathogens.
What causes infectious disease?
Infectious diseases are diseases caused by microorganisms. These are microscopic organisms, such as bacteria, viruses, fungi, or parasites. They can sometimes be caught from other people, the environment, from animal contact, or from insect bites.
What causes infection?
Infection occurs when viruses, bacteria, or other microbes enter your body and begin to multiply. Disease, which typically happens in a small proportion of infected people, occurs when the cells in your body are damaged as a result of infection, and signs and symptoms of an illness appear.
What are the different types of pathogens?
There are five main types of pathogens: virus, bacterium, fungus, protozoa, and helminth. The severity of the diseases caused by pathogens is varied. Some infections are mild whereas others could be life-threatening.
What is common illness? Allergies. Colds and Flu. Conjunctivitis (“pink eye“) Diarrhea.
What is communicable and noncommunicable disease?
Communicable diseases comprise infectious diseases such as tuberculosis and measles, while non-communicable diseases (NCDs) are mostly chronic diseases such as cardiovascular diseases, cancers, and diabetes.
What is disease and types of disease?
There are four main types of disease: infectious diseases, deficiency diseases, hereditary diseases (including both genetic diseases and non-genetic hereditary diseases), and physiological diseases. Diseases can also be classified in other ways, such as communicable versus non-communicable diseases.
What are infectious and noninfectious diseases?
Infectious diseases are transmitted from person-to-person through the transfer of a pathogen such as bacteria, viruses, fungi or parasites. A non-infectious disease cannot be transmitted through a pathogen and is caused by a variety of other circumstantial factors.
Are all diseases communicable?
Some — but not all — infectious diseases spread directly from one person to another. Infectious diseases that spread from person to person are said to be contagious. Some infections spread to people from an animal or insect, but are not contagious from another human.
What are infectious and noninfectious causes?
Infectious diseases are transmitted from person-to-person through the transfer of a pathogen such as bacteria, viruses, fungi or parasites. A non-infectious disease cannot be transmitted through a pathogen and is caused by a variety of other circumstantial factors.
What are the non communicable diseases? The four main types of noncommunicable diseases include cardiovascular disease, cancer, chronic respiratory disease, and diabetes .
Chronic respiratory disease
- chronic obstructive pulmonary disease (COPD)
- asthma.
- occupational lung diseases, such as black lung.
- pulmonary hypertension.
- cystic fibrosis.
What are the different types of pathogens? Pathogenic organisms are of five main types: viruses, bacteria, fungi, protozoa, and worms. Some common pathogens in each group are listed in the column on the right.
Why are infectious diseases called communicable diseases?
Infectious disease is caused by certain microorganisms called pathogens and leads to infections. These can be spread from one person to another hence are also called communicable disease.
What are examples of communicable diseases?
Information for Specific Communicable Diseases
- Chickenpox / Shingles.
- Ending the HIV Epidemic (EHE)
- Hepatitis B.
- Hepatitis C.
- HIV / AIDS.
- HIV / STDs / Hepatitis.
- Influenza.
- Mumps.
What makes a disease a disease?
disease, any harmful deviation from the normal structural or functional state of an organism, generally associated with certain signs and symptoms and differing in nature from physical injury. A diseased organism commonly exhibits signs or symptoms indicative of its abnormal state.
What is infectious and noninfectious disease?
Infectious diseases are transmitted from person-to-person through the transfer of a pathogen such as bacteria, viruses, fungi or parasites. A non-infectious disease cannot be transmitted through a pathogen and is caused by a variety of other circumstantial factors.
What is infection and types of infection?
Infection occurs when germs enter your body and multiply, resulting in disease. The four main types of infections are viral, bacterial, fungal, and parasitic.
What are the causes of diseases?
Disease-Causing Agents
| List of Diseases | |
|---|---|
| Disease | Causative Agent |
| Whooping cough | Bordetella pertussis |
| Human papillomavirus infection | Human papillomavirus |
| Acquired Immune Deficiency Syndrome (AIDS) | Human Immunodeficiency Virus (HIV) |
What causes bacterial infections?
What causes bacterial infections? A bacterial infection occurs when bacteria enter the body, increase in number, and cause a reaction in the body. Bacteria can enter the body through an opening in your skin, such as a cut or a surgical wound, or through your airway and cause infections like bacterial pneumonia.
What disease does bacteria cause? Bacteria cause many common infections such as pneumonia, wound infections, bloodstream infections (sepsis) and sexually transmitted diseases like gonorrhea, and have also been responsible for several major disease epidemics.
