lUbrs at37"C
Liquid enrichment
medium ECST
Pharynx
Gram stainedsmear
t
se/ect;ve rnedun
T Y?f SPECIES DIAGNOSIS
------I
5 1 \
I I v
Gram or Del Veccbio
I l
-
\
-
A
stainedsmear
E $
Surface veil (Bio/ype daynosis) $ 3
Nutrient bro1-h
stock
cu/ture
Toxinogenici/y test
Phagetyping
(E. 0. t o )
Elff TYPE DlAGNOSIS, PA!AG€TYPING, TUX/NG€iVlCI7Y
+
FIG. 38. Scheme for C. diphtheriae microbiological diagnosis in healthy carriers.