Presentation on theme: "What is an Infectious Disease? Any disease that is caused by an agent that has invaded the body. These are caused by: Person to person contact Food and."— Presentation transcript:
What is an Infectious Disease? Any disease that is caused by an agent that has invaded the body. These are caused by: Person to person contact Food and water Animals Something in the environment
Person to Person Contact Sneezing Coughing Sharing Drinks
Food and Water Contaminated food Example: Salmonella Contaminated water Drinking from streams and lakes
Animals From animal bites we can get rabies, malaria, lymes disease, West Nile etc.
Environment Pathogens that are present on most of the objects around you. Door handles Phones
All infectious diseases are caused by a pathogen. A pathogen is any agent that causes disease. Examples: Bacteria Viruses Fungi Protozoan Parasites
Bacteria A tiny single cell organism that lives everywhere on earth. Examples: tuberculosis, tetanus, sinus infection Treatments: Antibiotics (which prevent growth and division of bacteria.
Viruses A disease causing particle made of genetic material and a protein coat. Examples: Chicken pox, flu, measles, colds, AIDS Treatment: Medication to treat the symptoms and prevent further production in human cells.
Bacteria versus Viruses Bacterial infections: Can be treated with antibiotic Examples: strep throat, sinus infections Viruses: Can only treat the symptoms. Some viruses just have to run their course. Examples: flu, cold, mumps, measles, hepatitis