bacterial virulence Flashcards
describe the relationship between the microbe and the host
symbiosis - to live together
relations can be beneficial for both host and microbe or harmful to the host
describe Mutualism
most beneficial,
both members benefit
in some cases they need each other to survive
define Commensalism
one benefits without affecting the other
although host benefits it may not be apparent
define Parasitism
a parasite benefits from its host while harming it.
the most harmful
name the 2 types of indigenous microbiota
resident and transient
why would transient bacteria leave
competition from other microbes,
elimination by the body immune system,
chemical or physical changes in the body
describe resident microbiota
most ‘personal’
specifically adopted to live in our body
unique to each individual
one of the main functions - compete out foreign bacteria
what bacteria is specifically adapted to live in our body
resident
under normal circumstances will microbiota cause disease
no.
certain circumstances can make microbiota …
opportunistic pathogens
what circumstances can change microbiota into opportune pathogens
immune supression
antibiotics
the wrong location
describe acquisition of normal microbiota
foetus free of microbiota
as soon as water breaks mouth and nose get microbiota from birth canal
intestine from first meal
skin from doctors, nurses, mother
when is resident microbiota established on a baby
within first few months
define pathogenicity
ability to cause disease
define virulence
a measure of pathogenicity
