BeWell wrote:
niman wrote:
BeWell wrote:
Sorry for not being very with it - where is this A/India/5103/2010 being found, apart from India? Is this one of the samples from PA?
S186P and S188T are used by H1N1 to escape immunological responses to last year's H1N1 (generated by prior infection or vaccination). In the UK 22/41 sequences have S188T and 14/41 have S188T, so 36/41 have one or another. The same is true for the US (many of the recent sequences have one or the other). The sequence in India has both and designated as a LOW REACTOR by the CDC.
So any sample that has S188T OR S186P has been designated a low reactor, or does it have to have BOTH to be a low reactor? (Just trying to make sure feeble brain gets it.)
The CDC designated the sample with both as a low reactor, but the CDC assay is NOT very sensitive. In real life, it is VERY likely that the vast majority of samples with S188T OR S186P will escape from last season's antibodies, which is why these two markers are spreading so quickly and are in 36/41 HA sequences from the UK.