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Explain the term: Clinical infection
Frage 2
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Explain the term: Sub-clinical infection
Frage 3
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Explain the term: Iatrogenic infection
Frage 4
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How are respiratory infections transmitted? Select Two answers
Antworten
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• Droplets (cough-sneeze)
• Saliva
• Soil-dust
• water aerosols
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Respiratory-salivary route - Sneezing propels mucus droplets from the respiratory mucosa, transmitting flu or cold viruses to a new host.
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Contact transmission - (direct & indirect physical contact)
Frage 5
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Zoonoses is a term used for what kind of disease?
Frage 6
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Explain the term: Endemic
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– Disease present in a community (region) all the time, usually only clinical in a few
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– Wide spread disease within a community (region), affecting many people but only occasionally present
Frage 7
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Explain the term: Epidemic
Antworten
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– Wide spread disease within a community (region), affecting many people but only occasionally present
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– Disease present in a community (region) all the time, usually only clinical in a few
Frage 8
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Explain the term: Pandemic
Antworten
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– Wide spread epidemic, not confined to a single community or region (more than one continent)
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– Wide spread disease within a community (region), affecting many people but only occasionally present
Frage 9
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Explain the term: Sporadic
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Widely scattered disease, occurring singly, irregularly, infrequently
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Wide spread epidemic, not confined to a single community or region (more than one continent)
Frage 10
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What is “Epidemiology”?
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deals with the incidence, distribution, and possible control of diseases and other factors relating to health.
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deals with the incidence, distribution, and possible control of dermatological diseases and other factors relating to skin care.
Frage 11
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Explain the difference between Morbidity and Mortality
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• Morbidity
– Number made ill by infective agent
• Mortality
– Number of deaths caused by infective agent
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• Morbidity
– Number of deaths caused by infective agent
• Mortality
– Number made ill by infective agent
Frage 12
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Explain the difference between Incidence and Prevalence
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• Incidence
– Number of new cases over specific period
• Prevalence
– Number of cases (infected or diseased) at a given time (old and new cases)
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• Incidence
– Number of cases (infected or diseased) at a given time (old and new cases)
• Prevalence
– Number of new cases over specific period
Frage 13
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What factors influence the spread of disease in a community? Select Three answers
Antworten
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• Virulence of the pathogen
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• Population susceptibility
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• Pathogen transmission mode
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• Education and awareness campaigns to the general public
Frage 14
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List four ways of preventing the spread of disease in a community.
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• Immunization
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• Health personnel and community workers
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• Educate the public
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• Proper treatment of water supplies
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• Complete segregation by class
Frage 15
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Which disease of the following disease type would most likely spread quickly through the Perth community and why?
Frage 16
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What are the two branches of the immune system?
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Innate and Adaptive
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Direct and Indirect
Frage 17
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How does skin protect against bacteria?
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Intact external barrier, NF, secretions
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Normal flora eradicates the majority of bacteria
Frage 18
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What white blood cells (WBC) types are phagocytic? Select Four
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Neutrophils
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Basophils
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Eosinophils
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Monocytes
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T cells
Frage 19
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What type of white blood cell (WBC) is mainly involved in the adaptive immune system?
Frage 20
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What antibody types are involved in the primary immune response?
Frage 21
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What antibody types are involved in the secondary immune response?
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IgG (Immunoglobulin G)
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IgM (Immunoglobulin M)
Frage 22
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What type of lymphocyte is involved in cell mediated immunity?
Frage 23
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List the ways antibodies fight infection
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• Antigens stimulate the generation of antibodies
• Antibodies have specific binding (variable region) regions to specific antigens
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• Antigens stimulate the generation of lymphocytes
• Antibodies have specific binding (variable region) regions to specific antigens
Frage 24
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List the antibody isotypes
Antworten
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• IgG
– Monomer, most abundant in serum
– largest amount, long term immunity, can cross placenta
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• IgA
– Monomer in serum, dimer in saliva and secretions, most abundant total
– saliva and mucosal surfaces, tear, nasal fluids, milk
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• IgM
– Pentamer, primary response
– first Ab to appear during an infection
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• IgE
– Monomer, stem binds mast cells, basophils and eosinophils causing release if granules
– anti-parasite, allergy
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• IgD
– Monomer, attached to B cells, antigen receptor for activation
– largest Ab - Ag receptor on B cells
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• IgR
– Monomer, most abundant in serum
– largest amount, long term immunity, can cross placenta
Frage 25
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What are the 4 cardinal signs of inflammation and how do they come about?
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pain
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heat
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swelling
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redness,
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initiation of Chemical Mediators such as Increased vaso-dilation and increased capillary permeability
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fever
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initiation of Chemical Mediators such as Increased vaso-constriction and decreased capillary permeability
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nausea