Dave in NM wrote:
niman wrote:
niman wrote:
P&I deaths in the US have spiked to the highest levels since the peak of the 2008 flu season, in spite of a low number of reported H1N1 cases, raising concerns that the current H1N1 CFR is markedly higher than the fall
http://www.cdc.gov/flu/weekly/weeklyarc ... igpi03.htmIt is worth noting that there was no seasonal influenza A detected last week. The % positive is slightly higher this week than earlier weeks and may signal a bottom for the fall wave and teh start of a winter wave. The early rise in P&I was associated with the fall wave. However, the latest spike is when reported cases of H1N1 are low (and seasonal H1N1 and H3N2 are at zero) which signals a more virulent H1N1.
It seems a little early to make this call, but your track record has been remarkably prescient. Other possibilities are RSV or just the normal time delays in reporting and categorizing fatalities.
If it is due to a more virulent H1N1, when do you suppose that the genetic sequences will be released?
The is about a two - three month lag in most sequences. So far one 2010 sequence has been released (in Russia with D225G). The Japan conversion of D225E to D225G was collected at the end of November and released today. The US death cluster at Duke happened in October, was announced in December and sequences were released this week.
I doubt that the diffeence in cases and P&I is due to a delay. When cases rose in the fall, the P&I went up at the same time. The P&I fell slightly or remained even formseveral weeeks, falling below the epidemic threshold, and this week it spiked higher.
Pediatic deaths definitely lag, but I don't think cases do.