W04_03 Transmission of Infection and Infection Control

Question 1

define reservoir

Answer 1

the living/nonliving material in or on which an infectious agent multiplies and/or develops, and is dependent on for its survival in nature.

Question 2

define modes of transmission

Answer 2

how infectious agents are passed form one individual to another (contact, droplet, airborne, etc.etc.)

Question 3

define incubation period

Answer 3

time period from when an infectious agent gains entry until the appearance of the first signs or symptoms of disease

Question 4

define period of communicability

Answer 4

time period from when an infectious agent is capable of being transmitted

Question 5

define control measures

Answer 5

measures taken to reduce the transmission of infectious diseases

Question 6

what is impetigo?

Answer 6

skin condition that produces blisters, sores, flaky skin

Question 7

define fomite

Answer 7

any object or substance capable of carrying infectious organisms

Question 8

what is the lower size limit of droplets?

Answer 8

defined to be >5 um in diameter

Question 9

what is neisseria meningitidis’s mode of transmission?

Answer 9

droplet

Question 10

what is mycobacterium tuberculosis’s mode of transmission?

Answer 10

airborne

Question 11

what’s vector-borne mode of transmission?

Answer 11

through another organism, e.g. insects, e.g. mosquitoes

Question 12

what’s the common vehicle mode of transmission?

Answer 12

a single contaminated vehicle source such as food, medication, etc. that transmits infection to multiple hosts

Question 13

what are some public health measures to control transmission?

Answer 13

vaccination;
post-exposure prophylaxis;
reportable disease;
contact tracing;
quarantine;
(outbreak investigation)

Question 14

which vaccines are newborns given at 2 months?

Answer 14

diphtheria;
pertussiss;
tetanus;
polio
haemophilus B;
pneumococcal;
rotovirus

Question 15

which act outlines reportable communicable diseases?

Answer 15

health protection and promotion act

Question 16

what’s contact tracing (public health)?

Answer 16

tracking of all individuals who’ve been in contact with a person with a communicable disease

Question 17

know quarantining. this isn’t used lightly.

Answer 17

okay.

Question 18

what are some measures public health can take as infection control?

Answer 18

surveillance;
routine practice;
decolonization;
post-exposure prophylaxis;
(outbreak investigation)

Question 19

what are the 4 big antibiotic resistant organism classes?

Answer 19

MRSA;
vancomycin resistant enterococci;
extended-spectrum beta-lactamase producing GN;
carbapenase-producing GN

Question 20

which public health ontario organization gives routine practices info on infection control?

Answer 20

PIDAC (provincial infectious disease advisory committee)

Question 21

what are the steps in an outbreak investigation?

Answer 21

confirm existence of outbreak;
develop case definition;
create line listing + epicurve;
assemble team;
institute control measures;
evaluate efficacy of control measures;
declare end of outbreak

Question 22

what are the three types of outbreaks?

Answer 22

point source;
common source;
propagated spread