2 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 contactFood and waterAnimalsSomething in the environment
3 Person to Person Contact SneezingCoughingSharing Drinks
4 Food and Water Contaminated water Contaminated food Example: SalmonellaContaminated waterDrinking from streams and lakes
5 AnimalsFrom animal bites we can get rabies, malaria, lymes disease, West Nile etc.
6 EnvironmentPathogens that are present on most of the objects around you.Door handlesPhones
7 All infectious diseases are caused by a pathogen. A pathogen is any agent that causes disease.Examples:BacteriaVirusesFungiProtozoanParasites
8 Bacteria A tiny single cell organism that lives everywhere on earth. Examples:tuberculosis, tetanus, sinus infectionTreatments:Antibiotics (which prevent growth and division of bacteria.
9 VirusesA 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.
10 Bacteria 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