Infectious Diseases Flashcards

1
Q

definition of disease

A

an illness of the body or mind that leads to poor health affecting mental and physical health

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2
Q

definition of infectious disease

A

disease caused by organism

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3
Q

definition of non infectious disease

A

disease caused by inherited/genetic

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4
Q

organism causing cholera

A

(bacteria) vibrae cholerae

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5
Q

organism causing measles

A

(virus) morbillivirus

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6
Q

organism causing malaria

A

(parasite) plasmodium

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7
Q

organism causing tuberculosis

A

(bacteria) mycobacterium tuberculosis

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8
Q

organism causing HIV/AIDS

A

virus

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9
Q

how is cholera transmitted

A

contaminated water/faeces

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10
Q

how is measles transmitted

A

moist infected water droplets/placenta

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11
Q

how is malaria transmitted

A

female mosquito bite

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12
Q

how is tuberculosis transmitted

A

inhaling infected water droplets/unpasteurised milk

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13
Q

how is HIV/AIDS transmitted

A

sexual intercourse/sharing needles

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14
Q

symptoms of cholera

A

diarrhoae
dehydration
fatigue

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15
Q

symptoms of measles

A

white spots in cheeks

watery eyes

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16
Q

symptoms of malaria

A

headaches
fever
nausea

17
Q

symptoms of tuberculosis

A

coughing blood
weight loss
fever

18
Q

symptoms of HIV/AIDS

A

sweating
weight loss
fever

19
Q

solution to cholera

A

chlorinated water supply

vaccines

20
Q

solution to malaria

A

drugs used in combination
drain ditches to avoid mosquito breeding
spray

21
Q

solution to tuberculosis

A

increase cleanliness

pasteurised milk consumption

22
Q

solution to HIV/AIDS

A

education on stigma

contraceptives/condoms

23
Q

describe the problems with HIV/AIDS

A
no vaccine/cure
HIV has high mutation rate
vertical transmission (mother to child)
symptomless carriers
need contact tracing
need to provide condoms
need education
24
Q

how do antibiotics work

A

they interfere with growth/metabolism of the bacteria

25
how does penicillin act on bacteria (8)
``` cell walls made of peptidoglycan held by cross links penicillin prevents cross links between peptiglycans inhibit enzymes to rebuild autolysins make holes in cell wall - becomes weaker (cross links don't form) water enters by osmosis high pressure cell wall bursts ```
26
why does penicillin not affect viruses (3)
it prevents cross links from forming in cell wall production viruses don't have cell walls viruses reproduce by living inside eukaroytic cells so they are unaffected by antibiotics
27
how do bacteria gain antibiotic resistance (5)
``` incomplete treatment not all bacteria is killed mutation selection of resistant bacteria resistant bacteria reproduce ```
28
how do avoid antibiotic resistance
use only when necessary complete treatment change the types of antibiotics avoid selling in pharmarcies - need prescription make sure patients don't keep antibiotics
29
how can bacteria transfer their resistance to other bacteria
vertical/horizontal transmission
30
describe vertical transmission
resistant parent cell divides by mitosis produced two identical daughter cell with resistance by plasmid
31
describe horizontal transmission
resistant and non resistant bacteria conjugate and a DNA strand of plasmid is passed and bacteria synthesises complementary strand
32
impacts of antibiotic resistance
deaths and long stays in hospital