This website uses cookies to ensure you have the best experience. Learn more

Pathogens And The Spread Of Disease

2681 words - 11 pages

Contents

1.1Introduction
1.2Methodology

2.0 What is a Pathogen?
2.1 Major Categories of pathogens/micro-organism
2.2 Bacteria
Fig 2.3 Bacterial Shapes
2.4 Viruses
Fig 2.5 Structure of a virus
2.6 Fungi
2.7 Parasites

3.0 Pathogenic Environment

4.0 What is disease?
4.1 How disease spreads

5.0 Conclusion

References

Pathogens and the spread of disease

1.1Introduction

“Health depends on the body maintaining its internal harmony.” (The U205 Course Team, 1985)

Health is a momentary condition of ones state of physical and mental well being. This is constantly compromised by the threat of disease. It is often hard to define exactly what disease is, however it is generally conceived as any undesirable bodily or mental condition which causes an organism to alter from its normal state of existence (Nesse, 2000).

1.2 Methodology

Our concern is to discuss and explore the abnormal functions and structures of pathology which underlie in illness and disease. To do so we have to ask a few questions. Firstly we need to discuss what disease is any why it occurs; we then need to consider the definition of pathogens and the major categories of micro-organisms and their microbial environment. Furthermore we shall analyze the pathogenesis of infection which deals with how disease spreads and what role pathogens play in the advance of it.

2.0 What is a pathogen ?

Diseases in all humans, plants and other organisms are caused by micro-organisms called pathogens; these can be micro-organisms such as bacteria, viruses, fungi, helminths and protozoa (Inglis,1996). The term pathogen is most commonly used to describe an infectious organism which interrupts the usual physiology of a multi-cellular animal or plant (Wassenaar, 2009). There are many pathogens which have been responsible for massive outbreaks of disease, an example of this is Yersinia Pestis which was the bacteria responsible for the black plague (Harwood 1979).
Yersinia Pestis is an extracellular pathogen, once attached to a microphage, it activates a specialized type III secretion system that acts like a syringe, allowing the bacterium to inject a number of toxic proteins called the Yersinia outer membrane protines or Yops directly into the macrophage cytoplasm.


2.1 Major categories of pathogens/micro-organisms

There are four major variations of pathogens to exist. They are Bacteria, Viruses, Fungi and parasites. Discussed here is how to identify these pathogens and mention common examples in each category.

2.2 Bacteria

There are numerous types of bacteria that can invade the body. They are single celled organisms that come in many different shapes and sizes. Most bacteria are microscopic, hence being micro-organisms being under 0.01mm,they also share similarities within their cells. They are typically composed of a cell wall, cell membrane, cytoplasm and genetic...

Find Another Essay On Pathogens And The Spread Of Disease

The Rise And Spread Of Christianity

1484 words - 6 pages ministry, Jesus went into the wilderness. For 40 days and 40 nights he fasted and prayed, struggling with temptation and also later providing guidance for his followers. Christians emulate Jesus' lifestyle and follow his example in conquering temptation and fighting the devil. After his return from the wilderness Jesus gathered together 12 disciples who believed that he was Christ, and would help Jesus spread his message of religious reform and

The Spread and Adaptation of Christianity

854 words - 4 pages strategically organized for more effective ministry, eventually leading to the institutionalized Catholic Church. While Roman Christianity had become homogenous, the spread of the religion to other, more distant areas required change and adaptation. As Christian missionaries attempted to convert the rest of Europe, approaches to achieve this conversion varied from complete destruction of pagan culture, appeals to power, and the less violent, slow approach

The History and Spread of Islam

2259 words - 9 pages Islam’s present day relevance is due to it being one of the world’s most talked about religions. It is also one of the largest religions in the world. Islam has followers in all areas of the globe. (Zissis, 2007) Islam first began spreading in 610 CE and has not stopped. Today, India’s population includes approximately 150 million Muslims and Islam has contributed greatly to the area and its people. (Kennedy, 2007) The spread of Islam is vast

The Growth and Spread of Rome

578 words - 2 pages Rome transformed from a city to one of the most powerful Empires of all time. The Roman Republic had many troubles, since the new constitution was not flawless and there remained powerful external enemies. Internally, one serious threat was the feuding of the leading families, many of whom commanded the support of large numbers of clients and used them on occasion to subvert the power of the state. Another was the struggle between the

The Spread of Christianity

1153 words - 5 pages crucification. There are 4 major branches of Christianity, Roman Catholic,Eastern Orthodox, Anglican, and protestant. Christians believe in only one God, and follow The Holy Bible. Christianity certainly did not become the worlds largest religion overnight, in fact there were many factors which helped the spread of Christianity. The spread of Christianity was helped by conversion by force, the Roman Empire, and early missionaries.. The spread of

The spread of Islam

1902 words - 8 pages There are several historical reasons for the astonishing spread of Islam throughout Arabia and beyond after Muhammad’s death in 632 AD. These factors basically depended in degree of which Islamic leader, empire, or dynasty was in power. Although the religious sincerity and zeal of the Islamic powers varied greatly, some reflection of the Muslim theological past was needed to internally stabilize the Islamic world. The ways in which Islam spread

The Spread of Blogging

1676 words - 7 pages “Blogging is an art, same as any other method of self-expression. Some are better at it than others” (Hugh Macleod, n.d.). With the rapid advance and spread of technology, blogging gained a wide interest worldwide. There are now over 152,000,000 blogs on the internet. This phenomenon has also reached Lebanon to become a way in which any person could express his opinions and thoughts freely and share them with the world. Many Lebanese blogs

The Spread of the Arab Empire and Islam

906 words - 4 pages after death. This is important to the military because it gave the Arab people incentive to fight in the armies, as all soldiers who died in battle would be granted access to Paradise, or eternal happiness after death. Also, Muhammad adapted the formerly tribal system of government into somewhat of a monarchy under him. These changes Muhammad brought about were the cause of the spread of the Muslim empire.The first, and perhaps most important

Collection and Identification of Plant Parts and Dental Caries Pathogens

1198 words - 5 pages Collection and identification of plant parts and dental caries Pathogens.  Plant Materials Collection The small branches of locally available Z. zanthoxyloides and T. glaucescens were collected from local Ogbete main market Enugu and were authenticated by Prof. Okigbo R.N of the department of Botany of Nnamdi Azikiwe University, Awka. These plant materials were dried under the sun for two weeks and also cut into pieces of approximately 15cms

Controlling the Spread HIV and AIDS of Sexually Active People

746 words - 3 pages HIV is a well-known sexually transmitted disease that should be taken seriously when it comes to a sexually active person. Sex is natural parts of life so take steps to make sure you and your partner are safe. The first step for a sexually active person that would like to protect him or herself from obtaining HIV or AIDS disease is to learn about the disease in more detail. Knowing how the disease is spread and the symptoms could

How to Stop the Spread of AIDS and HIV

1663 words - 7 pages As we all know, diseases like AIDS and HIV are a growing epidemic amongst society. To counteract the spread of such diseases many foundations have been created to spread awareness of the harm they can do and how they can be contracted. Epstein, an author, writes an article about a foundation called “Lovelife” that advertises the importance of safe sex. There are a vast amount of ways to combat diseases, but the most vital way is spreading

Similar Essays

The Issue Of Infectious Disease And How They Are Spread With Cholera And Malaria

1159 words - 5 pages The TED talk addressed the issue of infectious disease and the ways in which disease is spread using the examples of cholera and malaria. The speaker Paul Ewald discussed the ways in which humans may have the ability to reduce their exposure and spread of infectious disease through applying the theory of evolution by natural selection. This spread of disease poses a threat to humans as the bacteria that cause the disease evolves with humans and

Using Isolation Precaution To Prevent The Spread Of Disease

1027 words - 5 pages Isolation precaution to prevent disease from spreading An isolation precaution helps prevent the spread of infections by creating a barrier between people and germs. In a hospital setting, germs and microorganisms reside everywhere, whether those microorganisms are on door handles, computers, or even the floor. Each patient room should be clean and sanitized, with the disposal of any old linen or instruments. New equipment should be used for

The Spread Of Christianity And Islam

1373 words - 5 pages two of the largest and most historically important religions on earth--Christianity and Islam--also emerged and spread from the Middle East. As they expanded from this region, both of these religions had substantial impact on the course of history. Both of them also made considerable progress during their first 200 years of expansion. However, during the first two centuries of the existence of each religion there were fundamental differences

The Spread Of Buddhism And Christianity

1545 words - 6 pages The Spread of Buddhism and Christianity Buddhism and Christianity were each founded by one person, and then eventually grew into two of the largest religions in the world. Each religion had different reasons for the success in the spreading of each respected belief. Although both faced many hardships, the two religions overcame and prevailed through their problems and continued to find ways to attract new believers every day