Transmission of pathogens Flashcards

1
Q

what is the difference between direct transmission and indirect transmission

A

Both are the transmission of pathogen between host to host, however indirect involves a vector passing the pathogen

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2
Q

What are the 4 means of transmission

A

Direct physical contact
spore transmission
faecal oral transmission
droplet infection

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3
Q

what are the factors affecting transmission by direct physical contact

A

Washing hands
disinfecting surfaces
condoms
sterilising surgical equipment

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4
Q

What factors affect transmission via spores

A

wearing masks
washing skin that came into contact with soil

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5
Q

what factors affect transmission of faecal- oral tranmission

A

treat waste water and drinking water
Cooking food fully until its not raw

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6
Q

what factors affect droplet infection

A

catch it bin it kill it
covering mouth when sneezing

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7
Q

what are the all round factors which affect all means of transmissions

A

overcrowding
poor health care
homeless
poor ventilation

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8
Q

Describe the journey of plasmodium from an infected person to an uninfected person

A

Infected guy has plasmodium gametes in blood

Female anopheles mosquito sucks that blood

Plasmodium migrates to the salivary gland of the mosquito

mosquito bites uninfected guy

plasmodium travels to liver then to the blood

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9
Q

When plant pathogens are indirectly transmitted between plants, what tissue of the plant is usually infected

A

Vascular tissue

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10
Q

Describe an insect attack (indirect)

A

Insect attacks infected plant, then attacks uninfected plant- pathogen is transmitted

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11
Q

What disease is caused by a beetle in plants

A

Dutch elm disease

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12
Q

State the two areas of plant habitats which may contain pathogens

A

Can be present in soil
can be present in the air - airborne spores

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13
Q

Why are bacteria, fungi , protoctista more present in warm conditions

A

they grow and reproduce better in warm conditions

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14
Q

how does regularly cleaning door handles reduce transmission of pathogens

A

Kills germs and pathogens on the door handle- therefore less likely to spread

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15
Q
A
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