Re: Smittskyddsinstitutet: weekly influenza reports
Influenza Report, Week 12 (22 / 3 - 28 / 3), 2010
No new cases of novel influenza has been reported to SMI (Smittskyddsinstitutet) weeks after ten. Nor has the new hospital cases reported for previous weeks afterwards.
The number of influenza-related visits to health centers have also been very low. During week twelve, only two patients with flu-like symptoms (ILS) reported throughout landet.Påskledigheter may have influenced reporting something when fewer than usual sentinel doctors have reported. A degree of reporting can still affect the state ***** the next few weeks.
Within the voluntary laboratory reporting of seasonal influenza has a total of eight cases of influenza B reported from the microbiological laboratories in Malmö, Stockholm and Örebro. And further cases detected in sentinel sampling.
During flu season, four influenza B strains characterized in the SMI.
Three of them are similar to the strain included in seasonal flu vaccine, that is, a Victoria-like strain (samples from November, January and February).
A tribe is a Yamagata-like (sample from the end of December).
Strains characterized in the rest of Europe have all been the Victoria-like.
After weeks 28/2009, a total of eight A/H3N2, A/H1N1 17 pieces (the new flu) and 4 pieces of B strains characterized in terms of antiviral susceptibility of both phenotypic and genotypic analysis. All strains were susceptible to both oseltamivir and zanamivir by both methods.
A further 48 strains of A/H1N1 (the new flu) have been characterized from this period with only genotypic analysis. None showed any resistant mutations and is therefore considered to be sensitive to both drugs.
A total of 267 oseltamivir-resistant strains of A/H1N1 (the new flu) detected in the World. Most have occurred in antiviral therapy.
http://www.smittskyddsinstitutet.se...10/influensarapport-vecka-12-223---283--2010/