Infectious Infectious Diseases:Diseases:

Run Away!!!Run Away!!!

Pathogens:Pathogens:Pathogens:Pathogens:

Infectious Diseases: Infectious Diseases: Some facts Some facts

An An infectious diseaseinfectious disease is a disease is a disease that can be passed from that can be passed from one one organism to another.organism to another.

PasteurizationPasteurization: is a heating process : is a heating process that kills microorganisms and is often that kills microorganisms and is often used in the food preparation used in the food preparation business. For example, dairy business. For example, dairy products are usually products are usually pasteurizedpasteurized to to kill bacteria.kill bacteria.

How Diseases are How Diseases are Spread (Spread (Gross!Gross!))

o 1.) 1.) Person to Person:Person to Person: through through IIndirect ndirect (non-physical) Contact,(non-physical) Contact, like sneezing like sneezing or coughing, pathogens such as or coughing, pathogens such as influenza (flu), colds, and pneumonia are influenza (flu), colds, and pneumonia are passed from one person to another. passed from one person to another.

o Pathogens like influenza and colds can Pathogens like influenza and colds can also be passed through also be passed through DDirect irect (physical) Contact(physical) Contact like shaking hands like shaking hands or kissing.or kissing.

Indirect ContactIndirect Contact

Indirect Contact Indirect Contact (cont.)(cont.)

Direct Direct ContactContact

Spreading Disease Spreading Disease (continued):(continued):

2.) 2.) Contaminated Objects:Contaminated Objects: things like things like food, water, or surfaces may harbor food, water, or surfaces may harbor pathogens like colds, influenza, staph pathogens like colds, influenza, staph bacteria, and tetanus. bacteria, and tetanus. (That’s why washing your (That’s why washing your hands is so important. You never know where hands is so important. You never know where other’s hands have been).other’s hands have been).

3.) 3.) Animal BitesAnimal Bites:: pathogens can be spread pathogens can be spread through bites. Diseases caused by animal through bites. Diseases caused by animal bites include Lyme Disease (ticks), Rabies (bat bites include Lyme Disease (ticks), Rabies (bat or raccoon bites), and Malaria and West Nile or raccoon bites), and Malaria and West Nile Virus (mosquitoes).Virus (mosquitoes).

Diseases contracted from Diseases contracted from Contaminated Objects Contaminated Objects (food, water).(food, water).

Animal Animal BitesBites

Spreading Disease Spreading Disease (continued):(continued):

Spreading Disease Spreading Disease (continued):(continued):

4.) 4.) Pathogens in the EnvironmentPathogens in the Environment:: some pathogens occur naturally in some pathogens occur naturally in the environment. For example, the the environment. For example, the bacteria that causes bacteria that causes TetanusTetanus lives lives in soil and water. The bacteria that in soil and water. The bacteria that cause cause AnthraxAnthrax and and BotulismBotulism are are caused by bacteria that live in the caused by bacteria that live in the soil.soil.

4.) 4.) Pathogens in the EnvironmentPathogens in the Environment:: some pathogens occur naturally in some pathogens occur naturally in the environment. For example, the the environment. For example, the bacteria that causes bacteria that causes TetanusTetanus lives lives in soil and water. The bacteria that in soil and water. The bacteria that cause cause AnthraxAnthrax and and BotulismBotulism are are caused by bacteria that live in the caused by bacteria that live in the soil.soil.