. Author manuscript; available in PMC: 2016 Dec 15.

Published in final edited form as: J Acquir Immune Defic Syndr. 2015 Dec 15;70(5):463–471. doi: 10.1097/QAI.0000000000000802

Table 2.

Shannon entropy indexes of HIV-1 subtypes and recombinant forms circulating in South America. Data includes sequences from our study groups and from the Los Alamos HIV Sequence Database. Diversity was significantly higher in HIV-1B and BF recombinant forms for positions 179 and 181 (indicated in bold). Lower variability was observed in position 180, explained by the aspartic core maintenance.

Subtype/Recomb.Form	Shannon Entropy Index

	AA 179	AA 180	AA 181
B	0.595	0.056	0.908
C	0.313	0.000	0.619
F1	0.409	0.206	0.000
BC	0.566	0.000	0.637
BF	0.595	0.000	0.939