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CH 10 : Disease & Immunity
pathogen & prevention
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Cards (6)
what is a pathogen?
a pathogen is a
disease
causing
organism
produces
toxins
(
poisonous waste products
)
has
antigen
with
specific shape
(substance on
surface
of all
cells
)
examples of pathogens :
bacteria
,
virus
,
fungi
,
protoctista
what is a transmissible disease?
a disease in which the
pathogen can
be
passed
from
hot
to
another
how does transmission happen?
it can happen by:
direct contact
a)
blood.body fluid
b)
skin-skin
indirect contact
(not from
direct source
)
a)
contaminated food
/
water
b)
contaminated air i.e.sneezing
c)
animal
(vector aka
middle man
) i.e.
mosquito
,
flies
,
rats
what are 8 ways for prevention & treatment?
boiling water
pasteurising milk
cooking food at high temperatures
dishes and utensils uses
purify drinking water
Sewage treatment
chlorine added to filtered water
personal hygiene
pathogen releases
toxins
to cause
illness
which method of transmission is more dangerous to transmit disease?
indirect
transmission as:
how the
transmission
happened is not
clear
so,
difficult
to
prevent
further
transmission
thus, the disease may
spread quickly
(
difficult
to
control
)