DISCUSSION
The possible existence of minor antigenic relationships between Zika virus
and other viruses has not yet been completely explored in this laboratory. From
the evidence presented above, however, there is good evidence that Zika virus is
not identical with any of the viruses against the immune sera of which it has been
tested, and is not related to yellow fever, the Hawaii strain of dengue nor to the
GD VII and FA strains of Theiler's virus. In addition to the serological tests
which have been made, the pathogenicity and properties of Zika virus tend to
differentiate it from other viruses, and it is believed that Zika virus is a hitherto
undescribed virus.
The observations recorded in this paper are discussed in the paper which
follows, along with studies on the pathogenicity and properties of Zika virus