The four different categories of infectious agents are bacteria, viruses, fungi, and parasites .
What are the 4 types of infectious diseases?
There are different types of pathogens, but we’re going to focus on the four most common types: viruses, bacteria, fungi, and parasites .
What are the different types of infectious diseases?
Prevalent parasitic infections include malaria , Chagas disease, and toxocariasis. Viral infections – Like bacteria, viruses can cause many different infectious diseases. The common cold develops from a virus, as does more complex diseases like the flu, mononucleosis, smallpox, and HIV/AIDS.
What are 5 common types of infectious diseases?
- Chickenpox.
- Common cold.
- Diphtheria.
- E. coli.
- Giardiasis.
- HIV/AIDS.
- Infectious mononucleosis.
- Influenza (flu)
What are the major classifications of infectious diseases?
The agents of infection can be divided into different groups on the basis of their size, biochemical characteristics, or manner in which they interact with the human host. The groups of organisms that cause infectious diseases are categorized as bacteria, viruses, fungi, and parasites.
What are the five classifications of infectious microorganisms?
Figure 10.3. A variety of microorganisms can cause disease. Pathogenic organisms are of five main types: viruses, bacteria, fungi, protozoa, and worms .
What is the most infectious disease?
Bubonic and Pneumonic Plagues . Perhaps the most notorious of all infectious diseases, the bubonic and pneumonic plagues are believed to be the cause of the Black Death that rampaged through Asia, Europe and Africa in the 14th century killing an estimated 50 million people.
What is a type 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 the 10 most common diseases?
- Heart disease. Share on Pinterest Many of the top 10 causes of death are preventable through lifestyle changes and regular checkups. ...
- Cancer. Deaths in 2017: 599,108. ...
- Unintentional injuries. ...
- Chronic lower respiratory disease. ...
- Stroke and cerebrovascular diseases. ...
- Alzheimer’s disease. ...
- Diabetes. ...
- Influenza and pneumonia.
What are the 6 types of pathogens?
- Bacteria. Bacteria are microscopic pathogens that reproduce rapidly after entering the body. ...
- Viruses. Smaller than bacteria, a virus invades a host cell. ...
- Fungi. There are thousands of species of fungi, some of which cause disease in humans. ...
- Protists. ...
- Parasitic worms.
What are the two types of bacteria?
There are broadly speaking two different types of cell wall in bacteria, that classify bacteria into Gram-positive bacteria and Gram-negative bacteria .
What are the two types of infections?
Infections are common. From ear infections and the flu to COVID-19, chances are we all have had at least one at some point. Viral, bacterial, fungal, and parasitic infections can all trigger sepsis.
What is the rarest disease?
According to the Journal of Molecular Medicine, Ribose-5 phosphate isomerase deficiency, or RPI Deficinecy , is the rarest disease in the world with MRI and DNA analysis providing only one case in history.
What is the most common disease?
According to current statistics, hepatitis B is the most common infectious disease in the world, affecting some 2 billion people — that’s more than one-quarter of the world’s population.
What are 5 non infectious diseases?
- chronic obstructive pulmonary disease (COPD)
- asthma.
- occupational lung diseases, such as black lung.
- pulmonary hypertension.
- cystic fibrosis.
What are the 7 major types of microorganisms?
Microorganisms are divided into seven types: bacteria, archaea, protozoa, algae, fungi, viruses, and multicellular animal parasites ( helminths ). Each type has a characteristic cellular composition, morphology, mean of locomotion, and reproduction.
