WHO Statement on Norway Mutation
Kind of a wishy washy statement from WHO. It sounds more like they actually don't know what it means.
I believe that this mutation was first noted in Sao Paulo fatal cases which alerted
some flu watchers to expect it elsewhere.
Quote from afludiary.blogspot.com
Worldwide, laboratory monitoring of influenza viruses has detected a similar mutation in viruses from several other countries, with the earliest detection occurring in April. In addition to Norway, the mutation has been observed in Brazil, China, Japan, Mexico, Ukraine, and the US.
Although information on all these cases is incomplete, several viruses showing the same mutation were detected in fatal cases, and the mutation has also been detected in some mild cases. Worldwide, viruses from numerous fatal cases have not shown the mutation. The public health significance of this finding is thus unclear.
The mutations appear to occur sporadically and spontaneously. To date, no links between the small number of patients infected with the mutated virus have been found and the mutation does not appear to spread.
The significance of the mutation is being assessed by scientists in the WHO network of influenza laboratories. Changes in viruses at the genetic level need to be constantly monitored. However, the significance of these changes is difficult to assess. Many mutations do not alter any important features of the virus or the illness it causes. For this reason, WHO also uses clinical and epidemiological data when making risk assessments.
Although further investigation is under way, no evidence currently suggests that these mutations are leading to an unusual increase in the number of H1N1 infections or a greater number of severe or fatal cases.
More at: http://afludiary.blogspot.com/2009/1...-mutation.html