Some examples of UTR 5´ sequences:- 
KX601166-Senegal-1984     ............................GACAGTTCGAGTTTGAAGCGAGAGCTAACAACAGTATCAACAGGTTT.AATTTGGATTTGGAAACGAGAGTTTCTGGTC 
KX601169-Uganda-1947      ....................................GAGTCTGAAGCGAGAGCTAACAACAGTATCAACAGGTTT.AATTTGGATTTGGAAACGAGAGTTTCTGGTC 
KU955593-Cambodia-2010    AGTTGTTGATCTGTGTGAATCAGACTGCGACAGTTCGAGTTTGAAGCGAAAGCTAGCAACAGTATCAACAGGTTTTATTTTGGATTTGGAAACGAGAGTTTCTGGTC
KU681082-Philippines-2012 AGTTGTTGATCTGTGTGAATCAGACTGCGACAGTTCGAGTTTGAAGCGAAAGCTAGCAACAGTATCAACAGGTTTTATTTTGGATTTGGAAACGAGAGTTTCTGGTC
KX369547-Polynesia-2013   ................GAATCAGACTGCGACAGTTCGAGTTTGAAGCGAAAGCTAGCAACAGTATCAACAGGTTTTATTT.GGATTTGGAAACGAGAGTTTCTGGTC 
KU509998-Haiti-2014       AGTTGTTACTGTTGCTGACTCAGACTGCGACAGTTCGAGTTTGAAGCGAAAGCTAGCAACAGTATCAACAGGTTTTATTT.GGATTTGGAAACGAGAGTTTCTGGTC
KJ776791-Polynesia-2013   ............................................................AGTATCAACAGGTTTTATTTTGGATTTGGAAACGAGAGTTTCTGGTC
KX548902-Colombia-2015    ........................................................................TTTTATTTTGGATTTGGAAACGAGAGTTTCTGGTC 
KX601168-Puerto-Rico-2015 ..................ATCAGACTGCGACAGTTCGAGTTTGAAGCGAAAGCTAGCAACAGTATCAACAGGTTTTATTTTGGATTTGGAAACGAGAGTTTCTGGTC 
KX377337-Puerto-Rico-2015 AGTTGTTGATCTGTGTGAATCAGACTGCGACAGTTCGAGTTTGAAGCGAAAGCTAGCAACAGTATCAACAGGTTTTATTTTGGATTTGGAAACGAGAGTTTCTGGTC 
KX051563-Haiti-2016       AGTTGTTACTGTTGCTGACTCAGACTGCGACAGTTCGAGTTTGAAGCGAAAGCTAGCAACAGTATCAACAGGTTTTATTTTGGATTTGGAAACGAGAGTTTCTGGTC 
KU820899-China-2016       ...GTTGTTTCTGTGTGAATCAGACTGCGACAGTTCGAGTTTGAAGCGAAAGCTAGCAACAGTATCAACAGGTTTTATTTTGGATTTGGAAACGAGAGTTTCTGGTC
KU870645-Guatemala-2016   ........CTGTGTGTGAATCAGACTGCGACAGTTCGAGTTTGAAGCGAAAGCTAGCAACAGTATCAACAGGTTTTATTTTGGATTTGGAAACGAGAGTTTCTGGTC
KX266255-China-2016       .........TCTGTGTGAATCAGACTGCGACAGTTCGAGTTTGAAGCGAAAGCTAGCAACAGTATCAACAGGTTTTATTTTGGATTTGGAAACGAGAGTTTCTGGTC
KX673530-Guadeloupe-2016  ................GAATCAGACTGCGACAGTTCGAGTTTGAAGCGAAAGCTAGCAACAGTATCAACAGGTTTTATTTTGGATTTGGAAACGAGAGTTTCTGGTC
KX197205-Brazil-2015      .........TCTGTGTGAATCAGACTGCGACAGTTCGAGTTTGAAGCGAAAGCTAGCAACAGTATCAACAGGTTTTATTTTGGATTTGGAAACGAGAGTTTCTGGTC


DIAGRAM OF THE RNA STEM LOOP STUCTURE OF THE UTR 5´
produced using:
(RNAstructure Web Server. (Reuter, J. S., & Mathews, D. H. (2010). RNAstructure: software for RNA secondary structure prediction and analysis. BMC Bioinformatics. 11,129)


FOR MORE DETAILS SEE:
Comparative genomic analysis of pre-epidemic and epidemic Zika virus strains
for virological factors potentially associated with the rapidly expanding epidemic.
Zhu Z, Chan JF, Tee KM, Choi GK, Lau SK, Woo PC, Tse H, Yuen KY.
Emerg Microbes Infect. 2016 Mar 16;5:e22. doi: 10.1038/emi.2016.48.
and
Villordo SM, Carballeda JM, Filomatori CV et al.
RNA Structure Duplications and Flavivirus Host Adaptation.
Trends Microbiol 2016; 2016; doi:10.1016/j.tim.2016.01.002.
Updated 16 December 2016