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Related Flashcards
Cards In This Set
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Name 10 ways a pathogenic organism can leave a host
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Saliva (licking and biting) nasal (sneezing) or occular discharge sputum (coughing) urine faecesskin vomit blood venereal contact in milk
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Explain the difference between direct contact and indirect contact
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Direct contact is through intimate contact whereas indirect contact is contact via inanimate objects known as fomites
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List 5 forms of direct contact
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Touch licking biting sniffing mating
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List 5 forms of indirect contact
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Sharing bowls sharing bedding using the same brushes peeing at the same lampost sharing equipment
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How are aerosols (airborne diseases) mainly brought about?
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Coughing and sneezing
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Name the two types of carriers
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Healthy carrier Convalescent carrier
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Describe a Healthy Carrier
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One who never exhibits any clinical signs of the pathogen being present but passes it to others at any time.
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This animal will have shown clinical signs for the disease but will have recovered from it . This type of carrier is able to transmit pathogenic microorganisms for some time after recovery. It may shed the pathogen when stressed.
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Convalescent carrier
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Whether a convalescent carrier or a healthy carrier, if currently shedding a pathogen they are known as .....
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An open carrier
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Closed carriers are....
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Whether the animal is a healthy or convalescent carrier - they are known as this if NOT currently shedding.
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Endoparasite tapeworm uses this type of vector
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Biological vector
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Define a biological vector
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Part of the organisms life cycle must take place in this host.
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No part of the life cycle will occur in their host is known as a ....
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Mechanical vector
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This type of host will carry the infectious organism and will shed it at any time
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Trasnport host
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This organism lives in the tissues of of the middle host (known as?) and will not infect until eaten
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Paratenic hosts
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