SEASON 2000-2001
BULLETIN N°7
SEASON 2000-2001
BULLETIN N°7
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| Overall, influenza activity remained moderate. However, it reached regional to widespread actitvity in 10 countries. A(H1N1) was still the predominant type/sutype. Influenza B viruses were increasingly reported and became predominant in England. | ||
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| AUSTRIA** | Influenza activity
was reported in all parts of the country during week 21/04 in association
with 19 detection of influenza A virus |
Week 21/04 31/01/01 |
| BELARUS** | Influenza activity
reached epidemic level throughout the country.
Influenza A and B viruses were detected by immunofluorescence |
Weeks 21/05 & 21/06 14/02/2001 |
| BELGIUM** | ARI & ILI levels below epidemic levels. Ongoing isolations/detections of influenza viruses with an increasing proportion of influenza B viruses (50% now) | Week 21/06 11/02/2001 |
| BULGARIA** | Increasing levels of influena activity since week 21/04. So far, 9 sporadic A(H3N2) strains were isolated in December and January. Two A(H1N1) isolates were reported in January from sporadic cases. | Weeks 21/01 to 21/06 15/02/2001 |
| CROATIA** | Increasing influenza activity as suggested by the increase of influenza A virus detection. Since the first virus detection (week 21/05), six additional were reported week 21/06 | Weeks 21/05 & 21/06 12/02/2001 |
| CZECH REPUBLIC** | Influenza activity was reported as widespread since week 21/04. The peak was reached during week 21/05. Activity was associated with A (H1N1) viruses | Weeks 21/04 to 21/06 |
| DENMARK** | Influenza activity has been increasing since week 21/03 and reached local (weeks 21/03 & 21/04), then regional (week 21/05) and finally widespread levels (week 21/06). Activity is mainly due to influenza A(H1N1) viruses | Weeks 21/03 to 214/06 |
| FINLAND** | Increasing influenza activity due to influenza A(H1N1) viruses was reported in many parts of the country | Weeks 21/04 to 21/06 12/02/2001 |
| FRANCE** | Influenza activity reached regional levels during week 21/04. It then peaked during week 21/05 where it was qualified as widespread. During week 21/06, acitivity decreased down to regional levels. Influenza was mainly due to A(H1N1) viruses although some influenza B isolates were reported from the sentinelle network | Weeks 21/04 to 21/06 14/02/2001 |
| GERMANY** | Influenza activity was reported as widespread since week 21/04. The peak was reached during week 21/05. Influenza was mainly due to influenza A (H1N1) viruses. | Weeks 21/04 to 21/06 |
| GREECE** | Four influenza type
A viruses were isolated and identified as A/New Caledonia/20/99 (H1N1)-like
(Southern Greece) |
Weeks 21/03 to 21/06 13/02/2001 |
| HUNGARY** | Local outbreaks of
influenza activity, in patients aged below 60 years. Isolations/detections
of influenza
A(H1N1) viruses were increasingly reported |
Week 21/03 10/02/2001 |
| ICELAND** | Eight influenza B isolates were reported from sporadic cases in the capital and nearby communities and from a local outbreak in South Iceland | Weeks 21/03 to 21/06 05/02/2001 |
| IRELAND** | Influenza activity due to influenza A(H1N1) and B viruses increased overall and varied from local (week 21/04) to sporadic (week 21/05) and back to local (21/06) | Weeks 21/04 to 21/06 |
| ITALY** | Influenza activity increased steadily and was mainly associated with influenza A(H1N1) viruses | Weeks 21/02 & 21/03 |
| LATVIA** | Increased influenza activity reached regional levels and was associated with numerous detections/isolations of influenza A(H1N1) viruses | Weeks 21/05 to 21/06 13/02/2001 |
| LITHUANIA** | Influenza activity increased and reached epidemic levels in nine of the 52 regions | Weeks 21/05 & 21/06 13/02/2001 |
| THE NETHERLANDS** | Influenza activity
due to influenza A(H1N1) viruses increased slightly from week 21/04 (sporadic)
to 21/05 (local)
and decreased during week 21/06 (sporadic). |
Weeks 21/02 &21/03 |
| NORWAY** | Regional influenza activity at low to moderate level was reported in asssociation with a significant circulation of influenza A(H1N1) viruses as suggested by numeroous virologically positive samples. Some rare detections of influenza B virus were reported for week 21/05 | Weeks 21/05 to 21/06 |
| POLAND** | Influenza activity have been sharply increasing since week 21/01. No detection nor isolation were reported | Week 21/02 18/01/01 |
| PORTUGAL | Both A(H1N1) and A(H3N2) isolates were reported for week 21/01 | Weeks 21/03 & 21/04 |
| ROMANIA** | Influenza activity at local levels mainly due to influenza A(H1N1) viruses. Some influenza B were isolated. | Week 21/06 15/02/2001 |
| RUSSIA and CIS c. | ARI and ILI levels were above the epidemic thresholds in 9 then 14 additional cities during weeks 21/02 and 21/03 respectively. Influenza activity was due to influenza A(H1N1) viruses | Weeks 20/49 & 20/50 21/12/00 |
| SLOVAK REPUBLIC** | Influenza activity reached widespread levels and peaked during week 21/04. Since then, it has sharply decreased. Activty due to A(H1N1) was reported | Weeks 21/04 to 21/06 13/02/2001 |
| SLOVENIA** | Influenza activity increased between weeks 21/02 and 21/06 and was qualified as local | Weeks 21/03 to 21/06 |
| SPAIN** | Sporadic influenza activity due to influenza A(H1N1) viruses | Weeks 21/04 to 21/06 |
| SWEDEN | Sporadic influenza activity. 2 influenza A viruses and 4 B were isolated within the sentinel system | Week 21/03 |
| SWITZERLAND** | Influenza activity increased between weeks 21/04 and 21/06 reaching regional levels. So far, the predominant type is A and sub-type is H1N1 | Weeks 21/04 to 21/06 |
| UNITED KINGDOM** | Influenza activity continued to increase in England and Scotland but was still in the lower end of the range of ‘normal seasonal activity’. Influenza activity in Wales remained within the range of ‘baseline activity'. In England, influenzatype B was predominant | Week 21/06 |
| EISS member | New EuroGROG member | |
| Elsewhere in the world | ||
| USA** | Widespread
influenza activity was reported by 11 states and territorial health departments,
whereas regional or sporadic activity was reported respectively by 26 and
13 states and territorial health departments.
During week 21/05, 323 (22%) specimens were found positive: 69 (21%) were influenza A(H1N1), 167 (52%) were type A not subtyped and 87 (27%) were influenza B viruses. |
Week 21/05 |
Bulletin compiled 16th February 2001 by Jean-Claude
Manuguerra
· ILI: influenza-like illness
· ARI : Acute Respiratory Infections
· ** NEW PIECE OF INFORMATION
· EISS members:
http://eiss.org
New EuroGROG members