2What is an Infectious Disease? Any disease that is caused by an agent that has invaded the body.These are caused by:Person to person contactFood and waterAnimalsSomething in the environment
3Person to Person Contact SneezingCoughingSharing Drinks
4Food and Water Contaminated water Contaminated food Example: SalmonellaContaminated waterDrinking from streams and lakes
5AnimalsFrom animal bites we can get rabies, malaria, lymes disease, West Nile etc.
6EnvironmentPathogens that are present on most of the objects around you.Door handlesPhones
7All infectious diseases are caused by a pathogen. A pathogen is any agent that causes disease.Examples:BacteriaVirusesFungiProtozoanParasites
8Bacteria A tiny single cell organism that lives everywhere on earth. Examples:tuberculosis, tetanus, sinus infectionTreatments:Antibiotics (which prevent growth and division of bacteria.
9VirusesA disease causing particle made of genetic material and a protein coat.Examples: Chicken pox, flu, measles, colds, AIDSTreatment: Medication to treat the symptoms and prevent further production in human cells.
10Bacteria versus Viruses Bacterial infections: Can be treated with antibioticExamples: strep throat, sinus infectionsViruses: Can only treat the symptoms. Some viruses just have to run their course.Examples: flu, cold, mumps, measles, hepatitis