Diseases Caused by Microorganisms

Pathogens attack and kill cells and tissues of the host directly or indirectly by producing toxins. Microorganisms such as bacteria, fungi and protozoa can reproduce inside and outside a host while viruses can only reproduce inside a living host. Specific diseases are caused by specific microorganisms and show specific signs and symptoms..

Diseases Caused by Microorganisms

By Mr. Ghaz, July 13, 2009

Image via Wikipedia

Harmful Microorganisms

Some microorganisms are harmful to humans, animals and plants because they cause diseases. They can also result in food turning bad and rotten. This may lead food poisoning if the food is consumed. Microorganisms that cause diseases are called pathogens. Pathogens consist of viruses, bacteria, fungi and protozoa.

Image via Wikipedia

Pathogens are classified as parasites or saprophytes. Parasites live inside a living organism called the host, for example a human being or a cow. Saprophytes live on dead tissues such as decaying plants and animals. Some bacteria turn food rotten and unsafe for consumption. These microorganisms decompose food and release toxins (poison) which result in food poisoning. Signs and symptoms of food poisoning are vomiting, stomach ache and diarrhea.

Image via Wikipedia

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  1. Another well researched blog. Thanks for increasing our medical awareness as always.

  2. Very interesting! I want to go take another shower now….

  3. Thanks Mr. G. another great, informative article, as usual.

  4. Very well written and informative. Starts the way for more informed research.

  5. Very comprehensive and enlightening.

  6. Very interesting.

  7. cool article! we’ve studied about these when i’m in secondary school..this is really informative:)

  8. very interesting. thanks for sharing

  9. That was a very detailed article about the types of bacteria and some common infections and diseases. The images were a little “ew” for me but it was really interesting.

  10. Interesting and complete piece. Have my liked it.

  11. another well written and interesting article mrghax thank you

  12. Well researched article, Mr Ghaz.

  13. Shouldn’t have read this right before beditme!
    Good job!

  14. Well thought out Mr Ghaz

  15. Completr guide of diseases,excellent research.

  16. Well written, informative and great use of pictures.


  17. nice consolidation.. loved the pics…

  18. Very well done. Good research and excellent information another great article Mr. Gaz.

  19. Wow how amazing. The things that could happy well done

  20. Well researched and informative piece.

  21. Thank you for interesting info . Great for research as well. As Always, well done.

  22. Thank you for interesting information . Great for research as well. As always, well done.

  23. that must be a good info for us to be aware of something very important. thanks for sharing

  24. Wonderful and very educational article. Thanks for sharing

  25. it’s very well written
    i like it:D
    but i felt like”ewwww’

  26. thanks for the information.Now i no that microorganisms are bad,really bad.

  27. horrible pics ewwwwwwwww but informative

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  29. these informations are very useful.outstanding

  30. this was awsome

  31. very nice I came on this website because I am learing in yr5 about micros and we are doing homework about the disess so this will help me al lot

    thank you very much
    sighned mistery girl


  33. excellent site for project work

  34. this article is really helpful for me. nice photo’s. thank you. excellent job.

  35. this was really very informative n pic were also very usefuul to me.

  36. Yo!!! That was ace man!!! I’m just totallly doing my homework and that was really helpful whoever wrote all this info i could find a job for you just come over to hollwood and well get you a job A.S.A.P!!!

  37. very excellent job perfectly done


  39. It is ok but Idid not like full

  40. Thank you first of all….. this piece of work was really informativeand helped me out complete my project…….. but i think it can be improved

  41. wow! nice information……..we discuss this but not farther in our introm subject, and it required to us as a medical technology student to study advance..hehe tnx sharing…

  42. can you post some more info????i need it in my project..thank man!!!

  43. Dear all, Thanks for your kind comments. Highly appreciated..
    Recently, my new article on this topic has been published on October 3, 2010. Details/ more infos on microorganisms as follows: Title: Microorganisms and Its Effects on Our Lives URL:
    ..Best Regards

  44. Very interesting from start to finish! My husband almost died last March from celulitis where bacteria from spring thaw enters minute breaks in the skin.

    Thanks for the information.

  45. thanks for making me understand different microorganisms,and their bad effects on a human body

  46. Very good :)

  47. that is nasty i dont like it it grooses me out

  48. disgusting

  49. horrable picss!!!!!!!bt very intreasting……..

  50. horrable picss!!!!!!!bt very intreasting……..

  51. horrable picss!!!!!!!bt very intreasting……..


  53. this so understandable keep on research

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