A sensor for the detection of tetrameric multivalent neuraminidase within a sample
is disclosed, where a positive detection indicates the presence of a target virus
within the sample. Also disclosed is a trifunctional composition of matter including
a trifunctional linker moiety with groups bonded thereto including (a) an alkyl
chain adapted for attachment to a substrate, (b) a fluorescent moiety capable of
generating a fluorescent signal, and (c) a recognition moiety having a spacer group
of a defined length thereon, the recognition moiety capable of binding with tetrameric
multivalent neuraminidase.