Infectious Diseases part 1
- Created by: JessicaGrey
- Created on: 26-03-16 14:05
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- Infectious Diseases1
- Pathogens- disease causing microrgamism
- Bacteria, Viruses and fungi
- Bacteria- produces toxins that make us feel ill
- Viruses(very, very small)- reproduce in a host cell. keep reproducing till they fill whole cell and it bursts
- The pathogens are not the disease - they cause the disease
- White blood cells
- (phangocytes)Ingest pathogens
- Produce antibodies that match the antigens on the pathogen.
- Produce antitoxins which counteract (neutralise) the toxins released by the pathogen
- Vaccination- putting a small amount of an inactive or dead pathogen, into the body.
- The body produces specific antibodies to kill a particular pathogen.
- The white blood cells produce antibodies to match the antigens- next time the body meets this pathogen it recognizes it and can produce the antibodies needed to kill it quickly
- Large proportion of the population immune to a pathogen = spread of the pathogen reduced.
- Semmelweis- Hand washing guy
- Noticed a higher case of childbed fever (birth disease) when doctors had just treated the dead
- Insisted that doctors washed
their hands before examining patients
- Reduced number of deaths in hospitals from infectious diseases
- Bacteria not yet discovered so doctors went from patient to patient without washing hands
- Pathogens- disease causing microrgamism
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