Some microorganisms are harmful as they cause various diseases in humans. Are there infectious diseases that are not caused by. Here we are sharing list of all diseases caused by various bacteria,protozoa and viruses. Here is a list of seven major diseases that are caused by fungi. Infections and infectious diseases are a great burden on many societies, including the countries in the who european region.
You are an ecosystem an ecosystem is a community of living things that interact with each other and with the nonliving things in their physical environment. Lesson summary bacterial diseases microorganisms that cause diseases are known as pathogens. We have uploaded a genuine pdf ebook copy of this book to our online file repository so that. In fact, our bodies contain at least 10 times more bacterial cells than human ones. Links to pubmed are also available for selected references. To reduce that burden an integrated approach is required, combining health promotion, disease prevention and patient treatment. Three principal reasons most often cited for the spread of diseases are poor sanitation, improper management, and introduction of new animals into a herd. Although most bacteria are harmless or often beneficial, some are pathogenic, with the number of species estimated as fewer than a hundred that are seen to cause infectious diseases in humans. There is even a special word to describe arthropodborne viruses. Prescotts microbiology 9th edition pdf free download. A host is an organism in which a virus or bacteria lives. Some of them are beneficial in many ways whereas some others are harmful and cause diseases. Pdf types of human disease by source of the infectious agent.
Get a printable copy pdf file of the complete article 1. What are pathogens, and what have they done to and for us. History of antimicrobial agents and resistant bacteria. Importantly, infectious disease and its treatment have a profound impact on the human microbiota, which in turn determines the outcome of the infectious disease in the human host. Microorganisms, like certain bacteria and yeasts, living on the human skin or in the nose, mouth, throat, small and large intestine and vagina, are part of the normal human flora. Friendly microorganisms microorganisms are used for various purposes. Ncert science textbooks class 612, wikipedia microbes or microorganisms microorganisms include bacteria, fungi, protozoa, some algae, viruses, viroids and also prions that are proteinacious infectious agents. Microorganisms are everywhere even in zion national park. Causes of diseases disease causes body functions to disfunction or function improperly. These include both acute and infectious diseases like the common cold, to chronic disease like aids. Brock biology of microorganisms th edition download. Microbes or microorganisms diseases caused by microorganisms diseases caused by bacteria, viruses, protozoans and fungi. The role of microbes in human health this article is provided courtesy of the american museum of natural history.
Candidiasis is a fungal infection caused by a yeast a type of fungus called candida. Infectious diseases are caused bymicroorganisms or products of microorganisms. Soon the etiology of favus, a type of ringworm and. Experts believe that about half of all human dna originated from viruses that infected and embedded their nucleic acid in our ancestors egg and sperm cells.
They use simple tricks to enter our bodies so they can cause disease. Some of these microbes, when overgrow, may become pathogenic, though. One or more of the following defects cause diseases. A microorganism, or microbe, is a microscopic organism, which may exist in its singlecelled form or in a colony of cells the possible existence of unseen microbial life was suspected from ancient times, such as in jain scriptures from 6th century bc india and the 1st century bc book on agriculture by marcus terentius varro. In 1835, bassi observed that a disease of the silk worm muscardine was caused by a fungus. Infection is one of the most common diseases caused by dysbiosis of the microbiota. Bacterial spot is also a serious disease of pepper. Peptic ulcers, helicobacter pylori, humans, ulcers in the lining of stomach and starting part of small intestine. Except for genetic and congenital factors, most of the diseases are caused by certain microorganisms. Microbiological classification of infectious diseases. Harmful microorganisms types and harmful effects on.
They are specially adapted to infect and multiply within a host. The scientific study of microorganisms began with their observation. It 100% sure that you will get at least one question from general science section human diseases caused by virus, bacteria, and. Diseasecausing microorganisms, however, are another matter entirely. Some of them are beneficial in many ways whereas some others are microorganisms have been used for the production of alcohol since ages. Mystery microorganisms students will learn about the five categories of microorganisms by classifying a set of species their mystery microorganisms.
Different diseases are caused by different types of microorganisms. Define emerging disease and explain why emerging diseases are a threat to human health. Microbiology is the study of microorganisms, microscopic organ isms that include in particular the bacteria, a large group of. Most of the maladies affecting the human race are caused by these microorganisms. Microbes or microorganisms diseases caused by microorganisms. From sample collection, through to analysis and laboratory investigation, the text covers a wide range of procedures and highlights.
Human diseases caused by virus, bacteria and protozoa pdf. In japan, as in other countries, infectious diseases caused by drug. Of all the known bacterial species,only a few are pathogenic to humans. Microbes occupy all of our body surfaces, including the skin, gut, and mucous membranes. List of human diseases caused by bacteria and viruses. Human diseases caused by bacteria flashcards quizlet. List human diseases caused by bacteria, virus, fungi, and protozoa hello friends welcome to.
Some common human diseases biology 267 notes module 4 environment and iii contact with soil contaminated with diseasecausing viruses and bacteria. Alright, now in this part of the article, you will be able to access the free pdf download of prescotts microbiology 9th edition pdf using our direct links mentioned at the end of this article. Pdf microbes are called diseasecausing microbes and can make humans, animals. Bacterial diseases of humans can be discussed according to their mode of. However, in response to the development of antimicrobial agents, microorganisms that have acquired resistance to drugs through a variety of mechanisms have emerged and continue to plague human beings.
Diseases caused by protozoa malaria plasmodium vivax amoebic dysentery entamoeba histolytica trypanosomiasis diseases caused by flatworms and roundworms filariasis parasitic disease caused by an infection with roundworms of the filarioidea type hookworm disease ancylostoma duodenale roundworm disease ascaris lumbricoides blood fluke disease schistossoma mansoni. The synanthropic house fly, musca domestica diptera. These organisms invade the tissue and produce infectious disease. Microorganisms play an important role in our lives. Pathogenic bacteria are bacteria that can cause disease.
These germs have been studying ways to trick the human immune system for a long time because getting past the bodys defences is key for their survival. There are several diseases caused by microorganisms. Gk, general studies, optional notes for upsc, ias, banking, civil services. Microbes cause disease in the course of stealing space, nutrients, andor. Over 85% of all known animal species are invertebrate animals called arthropods. List human diseases caused by bacteria, virus, fungi, and protozoa. The bacteria survive on diseased plant debris and on tomato seed.
List of human diseases caused by bacteria,virus,fungi. Has the ability to repair itself, to fight off attacking microorganisms and adapt to a variety of situations often time microorganisms enter the body and attempt to infect the body causing a disease a disease is a condition where an organism experiences impaired function often with detrimental symptoms. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Viruses of rabies are introduced through the wound caused by the bite of rabid animals, especially dogs. Diseases caused by bacteria and viruses bacterial diseases microorganismsviruses and prokaryotesthat cause disease are called pathogens. List human diseases caused by bacteria, virus, fungi, and. Microorganisms may be singlecelled like bacteria, some algae and protozoa, or multicellular, such as algae and fungi. Infections and infectious diseases whoeurope world health. There is a close connection between microbes and humans. Disease causing microorganisms safe drinking water.
The microorganisms involved in dental infections are also described. This list is very important for one day exams and upsc exams. Some other microorganisms are beneficial and contribute to human welfare. H ere are some of the important list of human diseases caused by virus, bacteria, and protozoa for your competitive exam preparations. Some microorganisms grow on other organisms while others exist freely. Some species of candida can cause infection in people.
Candida can cause infections if it grows out of control or if. We have included all the possible information regarding the topic which includes its causes, modes, causing virus etc. A list of common diseases caused by microorganisms are given in the previous post. Infectious dose number of organisms needed to successfully infect. The prerequisite for success in this fight is the participation of all health care professionals. Microorganisms like amoeba can live alone, while fungi and bacteria may live in colonies.
By contrast, several thousand species exist in the human digestive system. Offending pathogens colonize the intestinal mucosa, thus resulting in the induction of a strong inflammatory response, followed by. The human microbiota in health and disease sciencedirect. Infectious are those diseases which are liable to be transmitted to people, organisms, etc. Muscidae, is a mechanical vector of pathogens bacteria, fungi, viruses, and parasites, some of which cause serious diseases in humans and domestic animals. Candida normally lives on the skin and inside the body, in places such as the mouth, throat, gut, and vagina, without causing any problems. From the dawn of humanity and throughout history, infectious diseases have shaped human evolution, demography, migrations and history. Medical microbiology covers a range of key laboratory techniques used in the diagnosis of important human diseases caused by microorganisms. Full text full text is available as a scanned copy of the original print version. Typhoid fever is a lifethreatening illness caused by the bacterium salmonella typhi. However, in the future scientists may discover archaea associated with disease. At the present time, all known prokaryotic pathogens are bacteria. The life and health of human beings is under constant threat, particularly by microorganisms bacteria, viruses, fungi and protozoa.