Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Amino acid substitutions identified in HAs of pH1N1 viruses sequenced during 2009–2017. Amino acid substitutions of pH1N1 are reported in comparison to A/California/07/2009. Bordered cells indicate substitutions in receptor binding site. Deleterious mutations were predicted by online server PROVEAN and are indicated in bold
*Substitution Q240R was found in 16 viruses isolated exclusively from Iran
