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Understanding Communicable Diseases: Causes, Germs, and Prevention

This informative guide explores the causes and spread of communicable diseases, the types of germs responsible, and how to prevent infections. Learn about viruses, bacteria, fungi, and protozoa, and how germs are spread through direct and indirect contact, as well as through animals and contaminated food or water.

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Understanding Communicable Diseases: Causes, Germs, and Prevention

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  1. Understanding Communicable Diseases

  2. Causes of Communicable Diseases

  3. Germs and Diseases Germ and Diseases Communicable Diseases – Disease that can be passed from one person to another - communicable disease caused by microorgansims that can only be seen through an microscope Non Communicable Diseases – Like asthma that cannot be passed from one person to another

  4. Types of Germs • Viruses – The smallest and simplest life form. They cause a wide range of diseases. • Most diseases caused by virus or bacteria • Colds, chicken pox, AIDS, viral pneumonia, flu, measles, smallpox, mumps, herpes, rabies, polio, mononucleosis

  5. Types of Germs • Bacteria – Tiny one celled oraganisms that live nearly everywhere • Most harmless, but some cause disease • Virus and bacteria most common cause of disease • Strep throat, tuberculosis, pinkeye, food poisoning, typhoid fever, gonorrhea, diptheria, lyme disease, bacterial pnuemonia

  6. Types of Germs • Fungi – Primitive life forms that cannot make their own food • Athletes foot • Ring worm

  7. Types of Germs • Protozoa – One celled, animal-like organisms • Many are harmless • Cause diseases as malaria and amebic dystentery

  8. How Germs are spread • Direct contact – you get germs on your hands and skin through direct contact with another person • Sometimes by sexual contact

  9. How Germs are spread • Indirect contact – someone coughs or sneezes, expelling germs into the air • Other people breath these germs • Colds, flu, tuberculosis spread this way • Drinking glasses, eating utensils, other personal items

  10. How Germs are spread • Contact with animals or insects – • Rabid animals spreads rabies • Lyme disease is transmitted through tick bites

  11. How Germs are spread • Other Contacts – Contaminated food or water • This type of food poison is called Salmonella

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