BTEC level 3 extended diploma in medical science unit 21

A1 U21

M1

Source of Name of micro Route of transmission Entry into human
infection organism body
Human reservoir  HIV HIV HIV
 Measles  Fluid of from  Skin that has
 Mumps sexual intercourse been cut from
 When someone is wounds
infected with the  Contamination
virus sharing of by the
the needle that is bloodstream
now contaminated  If a mother has
 Infected mother it then by the
that has passed it placenta or
on to child milk that is
Measles from the
 Sneezing/coughing mother
 Surface that has Measles
been infected  Unclean
 Open places like atmosphere,
eyes, nose, lips, nose, mouth,
cuts after eyes
contaminated  Contamination
place being not by the blood
cleaned stream
 Inhaling air that  Inhaling the
has been atmosphere
contaminated that has been
Mumps contaminated
 Direct contact  Hands that
from a person that have touched
has already been contaminated
infected surfaces that
 Sneezing/coughing have been
Mumps
 From the fluids
of the mouth
like kissing
 Inhaling
contaminated
atmosphere
from a close by
person that
has sneezed or
coughed
 Not washing
hands after
touching a
contaminated
surface

, Animal  Rabies Rabies Rabies
 Blastomycosis  It is transmitted by  skin to mouth
 Psittacosis direct contact or open places
from open skin, on the
mouth, eyes animal’s body.
 Transmission of  Licking of open
saliva contact due wounds by
to being bitten by other infected
an infected animal animals
 brain/nervous Blastomycosis
system tissue from  Breathing in
an infected infected air
animal. that has
Blastomycosis bacteria by the
 Inhaling floating soil that has
micro-organisms fugus
from
 Having open
contaminated soil
cuts as well
into the lungs
 The fungus is rare, from touching
but it is still can the infected
infect the animal if soil
they have open  Blood
skin from cuts transmission
 Having open of open cuts
wound cuts and being rubbed
blood on other
transmission animals
Psittacosis Psittacosis
 Fever that are in  Inhaling the
birds are infected
transmitted by the atmosphere
atmosphere from and passing it
inhaling it by being to other birds
stuck in the same that are
cage around
 aerosolized from  The dried
dried faeces faeces that is
 respiratory tract being touched
secretions of by other birds
infected birds
Non living  Salmonella Salmonella Salmonella
 Faecal-oral route  Infected by
 food and water eating foods
 by direct animal contaminated
contact, and rarely with faeces
from person-to- from an
person infected
animal
 environmental