Why do you need a sterile tongue depressor to obtain a sterile throat culture? What might be the outcome of a throat culture if the tongue depressor was not sterile?

Why do you need a sterile tongue depressor to obtain a sterile throat culture? What might
be the outcome of a throat culture if the tongue depressor was not sterile?
A throat culture may be defined as; a technique which is applied for identification of
pathogens in stuff collected from throat. For instance, diseases like; Strep throat caused by attack
of Group A Beta-hemolytic Streptococcus might be diagnosed via implementation of this
technology. Moreover, additional disease causing organisms as; those responsible for
infection of posterior pharynx and tonsillar areas can also be recognized via application of this
modus operandi. Hence; this is essential to apply...