Since that novel introduction, four additional specimens have been deposited matching the Tomsk01 nucleotide sequence coding for 263D, spreading the geographical and time range.
- A/Thailand/CU-H9/2009 collected on 2009-06-17
- A/Thailand/CU-H276/2009 collected in 2009-07
- A/Thailand/CU-B938/2009 collected in 2009-08
- A/Wakayama/57/2009 collected on 2009-07-13
A/Thailand/271/2005 (H1N1) is a potential progenitor for this SNP and other recent pandemic acquisitions.
These sequences carry additional HA polymorphisms including 244I on ThaiCU-H9 matching Ancona02 and 405T on ThaiCU-H276 matching TorontoT5362.
You've noticed from our discussions that this HA domain has activity occurring in many parts of the world. Residue 263 continues to rank as a primary watch position within ΣPF11 for our team.
