The biological substrates that contain an epidemically significant concentration of HIV are:
b)
blood;
d)
cervical secretion;
e)
sperm;
f)
breast milk.
Vibrio genus involves many species, only some serotypes of V.cholerae are pathogens of cholera. Which of the following causative agents of cholera?
V.cholerae serogroups non O1 and non O139
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