Infectious Disease

advertisement

The Cause of Infectious

Disease

Dr. Solis

The Cause of Infectious

Disease

Disease – a term that can be used to describe any condition that negatively affects the normal functioning of the mind or body.

 In a way, infirmities and illness are reminders of the weakness of the human body.

 The Bible tells us that God is a God that can heal

(Exodus 15:26)

Something to think about

 “Ring around the rosy, a pocket full of posies, Ashes Ashes, we all fall

down” -- This children’s rhyme was originally sung during the Middle

Ages in Europe during the ‘black death’ or bubonic plague.

Ashes, Ashes used to be read Achoo Achoo (because of the sneezing symptoms of a person with the plague)

 Later it was switched to Ashes Ashes because they would burn the bodies to prevent the spread of the illness

 In the old days, people did not know what caused illness, or even how to treat them.

Types of Pathogens

 In the 1800s Louis Pasteur founded the idea that germs cause disease

 This became known as Germ

Theory

 He began ‘Pasteurizing’ milk – which is what all people in developing nations drink today.

Types of Pathogens

Infectious Diseases – all diseases caused by the spread of Germs

(also known as communicable

diseases)

 These can be passed on from one person to another

Pathogens – microorganisms that cause disease: bacteria, viruses, fungi, and tiny animals (parasites) are pathogens

Bacteria

 Bacteria

 One celled, tiny organisms that come in many shapes:

 Rod like (bacillus)

 Round (coccus)

 Spiral (Spirochete)

 Bacteria grow everywhere

 Not all bacteria are harmful – some bacteria is produced by your body to break down food – these are called resident bacteria

Bacteria

Bacteria: Living organisms

 They need food, and they produce waste

 That waste is poison to the body

 Bacterial diseases include:

 Cholera

 Pneumonia

 Tuberculosis

 Certain venereal diseases

(gonorrhea)

 Strep infection

 Staph infection

 Botulism

Viruses

 Viruses: responsible for more infections than any other pathogen

 Smaller than bacteria, invades a cell and begins to damage it.

 The virus multiplies within a cell and damages it so it cannot function and dies

 Your body develops symptoms to let you know it is fighting an intruder

 Your body works overtime and becomes tired and rundown.

 Listen to your body

 You need good nutrition and rest.

Viruses

 Types of Viruses

 Polio

 Mumps

 Measles

 Chicken pox

 Smallpox

 Rabies

 Hepatitis

 Herpes

 AIDS

 EBOLA

FUNGI

 Fungi: organisms that usually cause diseases of the skin such as ringworm and athletes foot

 Fungi can penetrate the deeper tissues of the skin and cause symptoms similar to a virus

 Fungi can also enter the body through the air

Tiny Animals

AMOEBA – one celled organisms that penetrate the human body and cause problems in the lining of the membranes of the intestines

 A person who is carrying an amoeba pathogen may not know it but may still infect others

 For example, people who handle food in restaurants may unintentionally infect customers.

Tiny Animals

Parasites – infectious animal

 If a person carries too many parasites in the body, it can interfere with the individuals ability to digest food and absorb nutrients.

 Round worm

 Tape Worm

 Rickettsia

 Typhus

 Scabies

Process of infection…

Download