Re: Seasonal Flu 2008 - 2009 --
Italy. VIROLOGIC SURVEILLANCE OF INFLUENZA (From Ministry of Health - February 5, 2009)
VIROLOGIC SURVEILLANCE OF INFLUENZA
February 4, 2009
Weekly Update: 5/09
[Original PDF Document (In Italian) at this link Ministero della Salute. Translation by IOH. EDITED.]
-- ITALY
It continues the collection of clinical samples by Influnet peripheal Network laboratories.
During current surveillance week, 163 clinical samples have been collected, of these 21 were Influenza virus positive.
Among them, 19 were Influenza virus type A (12 type H3). Two were Influenza B.
University of Genoa has collected eight samples positive for Respiratory Syncitial Virus (RSV).
Table below summarizes virologic surveillance results since the start of season (week 46-08) to date (week 5-09).
[ WEEK 46 - 47 - 48 - 49 - 50 - 51 - 52 - 1 - 2 - 3 - 4 - 5 - TOTAL POSITIVE ]
-- FLU A - 3 - 4 - 4 - 8 - 7 - 11 - 17 - 35 - 47 - 84 - 60 - 19 - 299
-- A (not yet subtyped) - ... - ... - ... - ... - ... - 2 - 2 - 13 - 11 - 9 - 4 - 7 - 48
-- A/H3N2 - 3 - 4 - 4 - 8 - 7 - 9 - 15 - 22 - 36 - 69 - 54 - 12 - 243
-- A/H1N1 - ... - ... - ... - ... - ... - ... - ... - ... - ... - 6 - 2 - ... - 8
-- FLU B - 0 - 0 - 2 - 0 - 1 - 1 - 0 - 1 - 0 - 0 - 2 - 2 - 9
-- TOT POSITIVE SAMPLES - 3 - 4 - 6 - 8 - 8 - 12 - 17 - 36 - 47 - 84 - 62 - 21 - 308
<table style="width: auto;"><tbody><tr><td></td></tr><tr><td style="font-family: arial,sans-serif; font-size: 11px; text-align: right;">From TABLES</td></tr></tbody></table>
<table style="width: auto;"><tbody><tr><td></td></tr><tr><td style="font-family: arial,sans-serif; font-size: 11px; text-align: right;">From TABLES</td></tr></tbody></table>
Phylogenetic tree for relation between A/(H3N2) HA1 portions in Italian isolations during 2008/2009 epidemic season compared with previous season isolates.
Current season H3N2 isolates evidently derived from A/Brisbane/10/2007 vaccine reference strain lineage, with the two amino acids changes (G50E e K140I) that differentiate from previous reference strain A/Wisconsin/67/2005. However, Italian isolates showed also to possess another important substitution (K173Q) at E antigenic site, reported also in the most recent reference strain A/Wisconsin/5/2008
-- FROM THE WORLD
- EUROPE
Influenza viruses circulation continues to rise; to date influenza virus subtype A/H3 is predominant. During current surveillance week 3779 clinical samples have been collecte: of these 1904 (50% were influenza virus positive.
Among them 1824 were type A (803 H3, 59 H1 and 962 not yet typed) and 80 type B.
97 per cent of influenza A/(H1N1) isolates tested for antiviral resistance have been found to be oseltamivir resistant, but retained susceptibility to both zanamivir and adamantanes. All A/(H3N2) influenza virus isolates tested to date have been found to be susceptible both to oseltamivir and zanamivir but resistant to adamantanes.
Further informations at:
-- USA
Influenza virus circulation continues to rise. 3711 samples have been collected, of these 588 (15.8%) were influenza positive. Among them, 508 were type A (74 H1, 14 H3, 420 not yet subtyped). The remaining 80 were type B.
Influenza virus type A have been characterized as closely related to seasonal vaccine reference strains.
In addition, a human case of swine influenza virus type A/(H1N1) infection has been reported during surveillance week 03.
Further informations at:
-
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Italy. VIROLOGIC SURVEILLANCE OF INFLUENZA (From Ministry of Health - February 5, 2009)
VIROLOGIC SURVEILLANCE OF INFLUENZA
February 4, 2009
Weekly Update: 5/09
[Original PDF Document (In Italian) at this link Ministero della Salute. Translation by IOH. EDITED.]
-- ITALY
It continues the collection of clinical samples by Influnet peripheal Network laboratories.
During current surveillance week, 163 clinical samples have been collected, of these 21 were Influenza virus positive.
Among them, 19 were Influenza virus type A (12 type H3). Two were Influenza B.
University of Genoa has collected eight samples positive for Respiratory Syncitial Virus (RSV).
Table below summarizes virologic surveillance results since the start of season (week 46-08) to date (week 5-09).
[ WEEK 46 - 47 - 48 - 49 - 50 - 51 - 52 - 1 - 2 - 3 - 4 - 5 - TOTAL POSITIVE ]
-- FLU A - 3 - 4 - 4 - 8 - 7 - 11 - 17 - 35 - 47 - 84 - 60 - 19 - 299
-- A (not yet subtyped) - ... - ... - ... - ... - ... - 2 - 2 - 13 - 11 - 9 - 4 - 7 - 48
-- A/H3N2 - 3 - 4 - 4 - 8 - 7 - 9 - 15 - 22 - 36 - 69 - 54 - 12 - 243
-- A/H1N1 - ... - ... - ... - ... - ... - ... - ... - ... - ... - 6 - 2 - ... - 8
-- FLU B - 0 - 0 - 2 - 0 - 1 - 1 - 0 - 1 - 0 - 0 - 2 - 2 - 9
-- TOT POSITIVE SAMPLES - 3 - 4 - 6 - 8 - 8 - 12 - 17 - 36 - 47 - 84 - 62 - 21 - 308
<table style="width: auto;"><tbody><tr><td></td></tr><tr><td style="font-family: arial,sans-serif; font-size: 11px; text-align: right;">From TABLES</td></tr></tbody></table>
<table style="width: auto;"><tbody><tr><td></td></tr><tr><td style="font-family: arial,sans-serif; font-size: 11px; text-align: right;">From TABLES</td></tr></tbody></table>
Phylogenetic tree for relation between A/(H3N2) HA1 portions in Italian isolations during 2008/2009 epidemic season compared with previous season isolates.
Current season H3N2 isolates evidently derived from A/Brisbane/10/2007 vaccine reference strain lineage, with the two amino acids changes (G50E e K140I) that differentiate from previous reference strain A/Wisconsin/67/2005. However, Italian isolates showed also to possess another important substitution (K173Q) at E antigenic site, reported also in the most recent reference strain A/Wisconsin/5/2008
-- FROM THE WORLD
- EUROPE
Influenza viruses circulation continues to rise; to date influenza virus subtype A/H3 is predominant. During current surveillance week 3779 clinical samples have been collecte: of these 1904 (50% were influenza virus positive.
Among them 1824 were type A (803 H3, 59 H1 and 962 not yet typed) and 80 type B.
97 per cent of influenza A/(H1N1) isolates tested for antiviral resistance have been found to be oseltamivir resistant, but retained susceptibility to both zanamivir and adamantanes. All A/(H3N2) influenza virus isolates tested to date have been found to be susceptible both to oseltamivir and zanamivir but resistant to adamantanes.
Further informations at:
-- USA
Influenza virus circulation continues to rise. 3711 samples have been collected, of these 588 (15.8%) were influenza positive. Among them, 508 were type A (74 H1, 14 H3, 420 not yet subtyped). The remaining 80 were type B.
Influenza virus type A have been characterized as closely related to seasonal vaccine reference strains.
In addition, a human case of swine influenza virus type A/(H1N1) infection has been reported during surveillance week 03.
Further informations at:
-
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