Infectious diseases are diseases caused by living organisms like viruses and bacteria . Described as contagious, they can be passed from person to person through body secretions, insects or other means. Examples are SARS, influenza, the common cold, tuberculosis (TB), Hepatitis A and B.
What disease could be classified as an infectious disease?
An “Infectious disease” is a broad term that can cover a wide variety of conditions. From the common cold and flu to tuberculosis, syphilis, yellow fever and even the Black Plague.
What are the 5 infectious diseases?
- Chickenpox.
- Common cold.
- Diphtheria.
- E. coli.
- Giardiasis.
- HIV/AIDS.
- Infectious mononucleosis.
- Influenza (flu)
What are the 4 types of infectious diseases?
- Common cold.
- Norovirus.
- Stomach flu.
- Hepatitis.
What are the top 3 infectious diseases?
Viral hepatitis, influenza, and tuberculosis (TB) remain among the leading causes of illness and death in the United States and account for substantial spending on the related consequences of infection.
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 the difference between contagious and infectious diseases?
Infectious diseases are caused by microscopic germs (such as bacteria or viruses) that get into the body and cause problems. 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.
What are 5 diseases caused by bacteria?
- Tuberculosis.
- Anthrax.
- Tetanus.
- Leptospirosis.
- Pneumonia.
- Cholera.
- Botulism.
- Pseudomonas Infection.
Is mode of transmission by kissing?
Kissing offers many health benefits, but may also transmit a small number of disease-causing bacteria and viruses . Bacteria and viruses in the saliva or blood of one person can be spread to another person by kissing. Some diseases are more easily spread than others.
What are the 10 most common diseases?
- Heart disease. Number of deaths per year: 635,260. ...
- Cancer. Number of deaths per year: 598,038. ...
- Accidents (unintentional injuries) Number of deaths per year: 161,374. ...
- Chronic lower respiratory diseases. ...
- Stroke. ...
- Alzheimer’s disease. ...
- Diabetes. ...
- Influenza and pneumonia.
What are the 5 major types of infectious agents?
agents cause a wide variety of diseases affecting various parts of the body. The five main types of infectious agents are bacteria, protozoa, viruses, parasitic worms, and fungi . RNA, and sometimes fatty molecules known as lipids.
What diseases does an infectious disease doctor treat?
What is an infectious disease (ID) specialist? An infectious disease (ID) specialist is (see below, “Subspecialty/Fellowship Training”*) an expert in the diagnosis and treatment of diseases caused by microorganisms , including bacteria, viruses (such as HIV and hepatitis), fungi and parasites.
What are the 2 classes of infection?
They enter a host and take over cells, whereas bacteria can survive without a host. Treatment will depend on the cause of the infection. This article will focus on the most common and deadly types of infection: bacterial, viral, fungal, and prion .
What was the biggest pandemic?
The H1N1 influenza A pandemic of 1918–1920 (colloquially, but likely inaccurately, known as the Spanish flu) remains the deadliest pandemic of the modern age, with estimates of mortality ranging from 17 million to 100 million from an estimated 500 million infections globally (approximately a third of the global ...
What has killed the most humans in history?
| Source: CNET Source: Business Insider | Animal Humans killed per year | 1 Mosquitoes 750,000 | 2 Humans (homicides only) 437,000 | 3 Snakes 100,000 |
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What viruses are contagious?
Common examples of contagious viral diseases include the flu, the common cold, HIV, and herpes . Other types of viral diseases spread through other means, such as the bite of an infected insect.
