Taiwan Disease Surveillance 2011-2012 Flu Season (Peaked Week 2)

[Missouriwatcher]

Re: Taiwan Disease Surveillance 2011-2012 Flu Season

Week 1:
During week 1, influenza activity increased in Taiwan, and seasonal influenza virus type B is predominant in the community. Of the 474 specimens tested during week 51, 2011, 224 (47&#37 were positive for influenza viruses, 209 (44%) were positive for influenza B viruses, 14 (3%) were positive for influenza AH3 viruses, 1 (<1%) was positive for un-typed influenza A virus.

There were 147 new complicated influenza infections and 6 reports of death from complicated influenza infection during week 1. Since July 1, 2011, 442 complicated influenza infections have been confirmed, including 337 cases from influenza B virus infection, 94 cases from influenza A virus infection, 8 cases from pandemic (H1N1) 2009 virus infection and 3 cases due to un-typed influenza A virus infection. 145 cases of complicated influenza infections received the intensive care. Since July 1, 2011, there have been 20 reports of death from complicated influenza infection; 7 from the seasonal H3N2 strain and 13 from the seasonal influenza B strain, respectively.

The number of deaths related to pneumonia and influenza during week 52 was 306, which was comparable with the number of the previous week (305 deaths).

The rate of outpatient visits for influenza-like illness is 2.27%, a 18.8% increase compared with the previous week (1.91%).
The rate of emergency room visits for ILI is 19.08%, a 19.6% increase compared with the previous week (15.95%).

92.9% (n=26) of the influenza A (H3N2) viruses tested were related to the A (H3N2) vaccine component (A/Perth/16/2009). 16.8% (n=35) of the influenza B viruses tested belonged to the B/Victoria lineage and were related to the B component of the 2011-12 influenza vaccine (B/Brisbane/60/2008).

http://flu.cdc.gov.tw/lp.asp?ctNode=4091&CtUnit=960&BaseDSD=7&mp=151

The overall level of influenza activity has peaked, and influenza type B virus is currently the dominant influenza virus strain circulating in the community. The
influenza activity may reach the highest level around the Lunar New Year. Taiwan CDC continues to closely monitor the development of the influenza epidemic.

The enterovirus 71 infection epidemic has been on the rise. The ER consultation rate for hand-foot-and-mouth disease has remained high, and the threat of
enterovirus 71 still persists as mild cases of enterovirus 71 and cases of enterovirus infection with severe complications have still been detected.

http://www.cdc.gov.tw/lp.asp?ctNode=2682&CtUnit=1288&BaseDSD=7&mp=5

[Missouriwatcher]

Re: Taiwan Disease Surveillance 2011-2012 Flu Season (Peaked Week 2)

Week 4:
Influenza activity in Taiwan peaked at week 2; however, the rate of emergency room visits for influenza-like illness continued to increase because clinics had been closed over the Chinese New Year holidays. The rate of emergency room visits for influenza-like illness is expected to decrease gradually when clinics reopen after the holidays. Seasonal influenza virus type B is predominant in the community.

Of the 416 specimens tested during week 2, 2012, 201 (48&#37 were positive for influenza viruses, 180 (43%) were positive for influenza B viruses, 15 (4%) were positive for influenza AH3 viruses, 5 (1%) was positive for pandemic (H1N1) 2009 virus, 1 (<1%) was positive for un-typed influenza A virus.

There were 108 new complicated influenza infections and 10 reports of death from complicated influenza infection during week 4. Since July 1, 2011, 845 complicated influenza infections have been confirmed, including 677 cases from influenza B virus infection, 136 cases from influenza A virus infection, 21 cases from pandemic (H1N1) 2009 virus infection and 11 cases due to un-typed influenza A virus infection. 281 cases of complicated influenza infections received the intensive care. Since July 1, 2011, there have been 46 reports of death from complicated influenza infection; 35 from the seasonal influenza B strain, 10 from the seasonal H3N2 strain and 1 from the un-typed influenza A virus, respectively.

The number of deaths related to pneumonia and influenza during week 3 was 344, which was below the number of the previous week (350 deaths).

The rate of outpatient visits for influenza-like illness is 3.36%, a 40% increase compared with the previous week (2.40%).

The rate of emergency room visits for ILI is 24.44%, a 37.5% increase compared with the previous week (17.78%).

http://flu.cdc.gov.tw/lp.asp?ctNode=4091&CtUnit=960&BaseDSD=7&mp=151

Enterovirus：The enterovirus 71 infection epidemic has been on the rise. The ER
consultation rate for hand-foot-and-mouth disease has increased, which might be a
result of a decrease in the number of outpatient services available during the Chinese
New Year holiday.

http://www.cdc.gov.tw/lp.asp?ctNode=2682&CtUnit=1288&BaseDSD=7&mp=5

[Missouriwatcher]

Re: Taiwan Disease Surveillance 2011-2012 Flu Season (Peaked Week 2)

Summary：Week 5 (Jan. 29? Feb. 4, 2012)
Influenza activity in Taiwan peaked at week 2. Seasonal influenza virus type B is predominant in the community.

Of the 337 specimens tested during week 3, 2012, 173 (51%) were positive for influenza viruses, 158 (47%) were positive for influenza B viruses, 8 (2%) were positive for influenza AH3 viruses, 7 (2%) was positive for pandemic (H1N1) 2009 virus.

There were 128 new complicated influenza infections and 8 reports of death from complicated influenza infection during week 5. Since July 1, 2011, 973 complicated influenza infections have been confirmed, including 788 cases from influenza B virus infection, 150 cases from influenza A virus infection, 26 cases from pandemic (H1N1) 2009 virus infection and 9 cases due to un-typed influenza A virus infection. 317 cases of complicated influenza infections received the intensive care. Since July 1, 2011, there
have been 54 reports of death from complicated influenza infection; 42 from the seasonal influenza B strain, 10 from the seasonal H3N2 strain, 1 from pandemic (H1N1) 2009 virus infection and 1 from the un-typed influenza A virus, respectively.

The number of deaths related to pneumonia and influenza during week 4 was 355, which was below the number of the previous week (361 deaths).

The rate of outpatient visits for influenza-like illness is 2.09%, a 37.6% decrease compared with the rate of the Chinese New Year holidays (3.35%).
The rate of emergency room visits for ILI is 16.53%, a 32.1 % decrease compared with the rate of the Chinese New Year holidays (24.34%).

http://flu.cdc.gov.tw/lp.asp?ctNode=4091&CtUnit=960&BaseDSD=7&mp=151

[Missouriwatcher]

Re: Taiwan Disease Surveillance 2011-2012 Flu Season (Peaked Week 2)

Week 6:
Influenza activity in Taiwan peaked at week 2. Seasonal influenza virus type B is predominant in the community.

Of the 51 specimens tested during week 4 (Chinese New Year holidays), 2012, 16 (31%) were positive for influenza viruses, 14 (27%) were positive for influenza B viruses, 2 (4%) were positive for influenza AH3 viruses.

There were 92 new complicated influenza infections and 10 reports of death from complicated influenza infection during week 6. Since July 1, 2011, 1065 complicated influenza infections have been confirmed, including 856 cases from influenza B virus infection, 165 cases from influenza A virus infection, 33 cases from pandemic (H1N1) 2009 virus infection and 11 cases due to un-typed influenza A virus infection. 357 cases of complicated influenza infections received the intensive care. Since July 1, 2011, there have been 64 reports of death from complicated influenza infection; 50 from the seasonal influenza B strain, 12 from the seasonal H3N2 strain, 1 from pandemic (H1N1) 2009 virus infection and 1 from the un-typed influenza A
virus, respectively.

The number of deaths related to pneumonia and influenza during week 5 was 361, which was above the number of the previous week (359 deaths).

The rate of outpatient visits for influenza-like illness is 1.84%, a 12% decrease compared with the rate of previous week (2.09%).

The rate of emergency room visits for ILI is 14.3%, a 13.5 % decrease compared with the rate of previous week (16.53%).

http://flu.cdc.gov.tw/lp.asp?ctNode=4091&CtUnit=960&BaseDSD=7&mp=151

[Missouriwatcher]

Re: Taiwan Disease Surveillance 2011-2012 Flu Season (Peaked Week 2)

Week 7:
Influenza activity in Taiwan peaked at week 2. Seasonal influenza virus type B is predominant in the community.

Of the 206 specimens tested during week 5, 2012, 74 (36%) were positive for influenza viruses, 64 (31%) were positive for influenza B viruses, 8 (4%) were positive for influenza AH3 viruses, 2 (1%) were positive for pandemic (H1N1) 2009 virus.

There were 58 new complicated influenza infections and 8 reports of death from complicated influenza infection during week 7. Since July 1, 2011, 1123 complicated influenza infections have been confirmed, including 891 cases from influenza B virus infection, 178 cases from influenza A virus infection, 42 cases from pandemic (H1N1) 2009 virus infection and 12 cases due to un-typed influenza A virus infection. 376 cases of complicated influenza infections received the intensive care. Since July 1, 2011, there have been 72 reports of death from complicated influenza infection; 57 from the seasonal influenza B strain, 13 from the seasonal H3N2 strain, 1 from pandemic (H1N1) 2009 virus infection and 1 from the un-typed influenza A virus, respectively.

The number of deaths related to pneumonia and influenza during week 6 was 383, which was above the number of the previous week (369 deaths).

The rate of outpatient visits for influenza-like illness is 1.72%, a 6.5% decrease compared with the rate of previous week (1.84%).

The rate of emergency room visits for ILI is 13.63%, a 4.7 % decrease compared with the rate of previous week (14.3%).

Antigenic characterization: Taiwan CDC has antigenically characterized 315 human influenza viruses [2 pandemic (H1N1) 2009, 36 influenza A (H3), 277 influenza B] since July 1, 2011. 94.4% (n=34) of the influenza A (H3N2) viruses tested were related to the A (H3N2) vaccine component (A/Perth/16/2009). 13.4% (n=37) of the influenza B viruses tested belonged to the B/Victoria lineage and were related to the B component of the 2011-12 influenza vaccine (B/Brisbane/60/2008).

http://flu.cdc.gov.tw/lp.asp?ctNode=4091&CtUnit=960&BaseDSD=7&mp=151

[Missouriwatcher]

Re: Taiwan Disease Surveillance 2011-2012 Flu Season (Peaked Week 2)

Week 8 (Feb. 19? Feb. 25, 2012)
Influenza activity in Taiwan peaked at week 2. Seasonal influenza virus type B is predominant in the community.
Of the 217 specimens tested during week 6, 2012, 72 (33.2%) were positive for influenza viruses, 59 (27.2%) were positive for influenza B viruses, 7 (3.2%) were positive for influenza AH3 viruses, 6 (2.8%) were positive for pandemic (H1N1) 2009 virus.
There were 50 new complicated influenza infections and no report of death from complicated influenza infection during week 8. Since July 1, 2011, 1173 complicated influenza infections have been confirmed, including 930 cases from influenza B virus infection, 185 cases from influenza A virus infection, 45 cases from pandemic (H1N1) 2009 virus infection and 13 cases due to un-typed influenza A virus infection. 395 cases of complicated influenza infections received the intensive care. Since July 1, 2011, there
have been 72 reports of death from complicated influenza infection; 57 from the seasonal influenza B strain, 13 from the seasonal H3N2 strain, 1 from pandemic (H1N1) 2009 virus infection and 1 from the un-typed influenza A virus, respectively.
The number of deaths related to pneumonia and influenza during week 7 was 361, which was below the number of the previous week (384 deaths).
The rate of outpatient visits for influenza-like illness is 1.68%, a 2.3% decrease compared with the rate of previous week (1.72%).
The rate of emergency room visits for ILI is 12.97%, a 4.8 % decrease compared with the rate of previous week (13.62%).

Week 9 (Feb. 26? Mar. 3, 2012)
Influenza activity in Taiwan peaked at week 2. Seasonal influenza virus type B is predominant in the community.
Of the 222 specimens tested during week 7, 2012, 65 (29%) were positive for influenza viruses, 48 (22%) were positive for influenza B viruses, 14 (6%) were positive for influenza AH3 viruses, 3 (1%) were positive for pandemic (H1N1) 2009 virus.
There were 55 new complicated influenza infections and 3 reports of death from complicated influenza infection during week 9. Since July 1, 2011, 1228 complicated influenza infections have been confirmed, including 969 cases from influenza B virus infection, 198 cases from influenza A virus infection, 46 cases from pandemic (H1N1) 2009 virus infection and 15 cases due to un-typed influenza A virus infection. 409 cases of complicated influenza infections received the intensive care. Since July 1, 2011, there have been 75 reports of death from complicated influenza infection; 60 from the seasonal influenza B strain, 13 from the seasonal H3N2 strain, 1 from pandemic (H1N1) 2009 virus infection and 1 from the un-typed influenza A virus, respectively.
The number of deaths related to pneumonia and influenza during week 8 was 340, which was below the number of the previous week (366 deaths).
The rate of outpatient visits for influenza-like illness is 1.57%, a 6% decrease compared with the rate of previous week (1.67%).
The rate of emergency room visits for ILI is 12.8%, a 1.4 % decrease compared with the rate of previous week (12.98%).

http://flu.cdc.gov.tw/lp.asp?ctNode=4091&CtUnit=960&BaseDSD=7&mp=151

[Missouriwatcher]

Re: Taiwan Disease Surveillance 2011-2012 Flu Season (Peaked Week 2)

Week 10 (Mar. 4– Mar. 10, 2012)
Influenza activity in Taiwan peaked at week 2. Seasonal influenza virus type B is predominant in the community.

Of the 188 specimens tested during week 8, 2012, 56 (30&#37 were positive for influenza viruses, 33 (18%) were positive for influenza B viruses, 15 (8%) were positive for influenza AH3 viruses, 8 (4%) were positive for pandemic (H1N1) 2009 virus.

There were 39 new complicated influenza infections and 4 reports of death from complicated influenza infection during week 10. Since July 1, 2011, 1267 complicated influenza infections have been confirmed, including 990 cases from influenza B virus infection, 208 cases from influenza A virus infection, 52 cases from pandemic (H1N1) 2009 virus infection and 17 cases due to un-typed influenza A virus infection. 422 cases of complicated influenza infections received the intensive care. Since July 1, 2011, there have been 79 reports of death from complicated influenza infection; 62 from the seasonal influenza B strain, 14 from the seasonal H3N2 strain, 1 from pandemic (H1N1) 2009 virus infection and 2 from the un-typed influenza A virus, respectively.

The number of deaths related to pneumonia and influenza during week 9 was 311, which was below the number of the previous week (342 deaths).

The rate of outpatient visits for influenza-like illness is 1.46%, a 7% decrease compared with the rate of previous week (1.57%).

The rate of emergency room visits for ILI is 12.11%, a 5.3 % decrease compared with the rate of previous week (12.79%).

http://flu.cdc.gov.tw/lp.asp?ctNode=4091&CtUnit=960&BaseDSD=7&mp=151

[Missouriwatcher]

Re: Taiwan Disease Surveillance 2011-2012 Flu Season (Peaked Week 2)

Week 11:
Of the 185 specimens tested during week 9, 2012, 53 (29&#37 were positive for influenza viruses, 26 (14%) were positive for influenza B viruses, 19 (10%) were positive for influenza AH3 viruses, 7 (4%) were positive for pandemic (H1N1) 2009 virus and 1 (1%) was positive for un-typed influenza A virus.

There were 40 new complicated influenza infections and 3 reports of death from complicated influenza infection during week 11. Since July 1, 2011, 1307 complicated influenza infections have been confirmed, including 1005 cases from influenza B virus infection, 230 cases from influenza A virus infection, 54 cases from pandemic (H1N1) 2009 virus infection and 18 cases due to un-typed influenza A virus infection. 440 cases of complicated influenza infections received the intensive care. Since July 1, 2011, there have been 82 reports of death from complicated influenza infection; 65 from the seasonal influenza B strain, 14 from the seasonal H3N2 strain, 1 from pandemic (H1N1) 2009 virus infection and 2 from the un-typed influenza A virus, respectively.

The number of deaths related to pneumonia and influenza during week 10 was 311, which was below the number of the previous week (323 deaths).

The rate of outpatient visits for influenza-like illness is 1.5%, a 2.7% increase compared with the rate of previous week (1.46%).

The rate of emergency room visits for ILI is 12.13%, which is comparable with the rate of previous week.

http://flu.cdc.gov.tw/lp.asp?ctNode=4091&CtUnit=960&BaseDSD=7&mp=151

[Missouriwatcher]

Re: Taiwan Disease Surveillance 2011-2012 Flu Season (Peaked Week 2)

Week 12:
Of the 223 specimens tested during week 10, 2012, 59 (26.5&#37 were positive for influenza viruses, 26 (11.7%) were positive for influenza AH3 viruses, 24 (10.8%) were positive for influenza B viruses, 8 (3.6%) were positive for pandemic (H1N1) 2009 virus and 1 (0.4%) was positive for un-typed influenza A virus.

There were 24 new complicated influenza infections and 4 reports of death from complicated influenza infection during week 12. Since July 1, 2011, 1331 complicated influenza infections have been confirmed, including 1012 cases from influenza B virus infection, 246 cases from influenza A virus infection, 56 cases from pandemic (H1N1) 2009 virus infection and 17 cases due to un-typed influenza A virus infection. 445 cases of complicated influenza infections received the intensive care. Since July 1, 2011, there have been 86 reports of death from complicated influenza infection; 67 from the seasonal influenza B strain, 16 from the seasonal H3N2 strain, 1 from pandemic (H1N1) 2009 virus infection and 2 from the un-typed influenza A virus, respectively.

The number of deaths related to pneumonia and influenza during week 11 was 308, which was below the number of the previous week (318 deaths).

The rate of outpatient visits for influenza-like illness is 1.46%, a 1.4% increase compared with the rate of previous week (1.44%).

The rate of emergency room visits for ILI is 12.25%, a 0.9% increase compared with the rate of previous week (12.14%).

http://flu.cdc.gov.tw/lp.asp?ctNode=4091&CtUnit=960&BaseDSD=7&mp=151

[Missouriwatcher]

Re: Taiwan Disease Surveillance 2011-2012 Flu Season (Peaked Week 2)

Week 13:
Influenza activity in Taiwan peaked at week 2. Seasonal influenza virus type AH3 is predominant in the community.

Of the 189 specimens tested during week 11, 2012, 54 (29%) were positive for influenza viruses, 24 (13%) were positive for influenza AH3 viruses, 23 (12%) were positive for influenza B viruses, 7 (4%) were positive for pandemic (H1N1) 2009 virus.

There were 25 new complicated influenza infections and 5 reports of death from complicated influenza infection during week 13. Since July 1, 2011, 1356 complicated influenza infections have been confirmed, including 1019 cases from influenza B virus infection, 258 cases from influenza A virus infection, 58 cases from pandemic (H1N1) 2009 virus infection and 21 cases due to un-typed influenza A virus infection. 456 cases of complicated influenza infections received the intensive care. Since July 1, 2011, there have been 91 reports of death from complicated influenza infection; 71 from the seasonal influenza B strain, 17 from the seasonal H3N2 strain, 1 from pandemic (H1N1) 2009 virus infection and 2 from the un-typed influenza A virus, respectively.

The number of deaths related to pneumonia and influenza during week 12 was 279, which was below the number of the previous week (313 deaths).

The rate of outpatient visits for influenza-like illness is 1.44%, a 1.4% decrease compared with the rate of previous week (1.46%).

The rate of emergency room visits for ILI is 12.68%, a 3.5% increase compared with the rate of previous week (12.25%).

http://flu.cdc.gov.tw/lp.asp?ctNode=4091&CtUnit=960&BaseDSD=7&mp=151

[Missouriwatcher]

Re: Taiwan Disease Surveillance 2011-2012 Flu Season (Peaked Week 2)

Week 14:
Of the 199 specimens tested during week 12, 2012, 45 (23%) were positive for influenza viruses, 30 (15%) were positive for influenza AH3 virus, 10 (5%) were positive for pandemic (H1N1) 2009 virus, 5 (3%) were positive for influenza B virus.

There were 18 new complicated influenza infections and 10 reports of death from complicated influenza infection during week 14. Since July 1, 2011, 1374 complicated influenza infections have been confirmed, including 1022 cases from influenza B virus infection, 270 cases from influenza A virus infection, 62 cases from pandemic (H1N1) 2009 virus infection and 20 cases due to un-typed influenza A virus infection. 463 cases of complicated influenza infections received the intensive care. Since July 1, 2011, there
have been 101 reports of death from complicated influenza infection; 79 from the seasonal influenza B strain, 17 from the seasonal H3N2 strain, 3 from pandemic (H1N1) 2009 virus infection and 2 from the un-typed influenza A virus, respectively.

The number of deaths related to pneumonia and influenza during week 13 was 254, which was below the number of the previous week (281 deaths).

The rate of outpatient visits for influenza-like illness is 1.36%, a 6.8% decrease compared with the rate of previous week (1.46%).

The rate of emergency room visits for ILI is 12.46%, a 1.8% decrease compared with the rate of previous week (12.69%).

http://flu.cdc.gov.tw/lp.asp?ctNode=4091&CtUnit=960&BaseDSD=7&mp=151

[Missouriwatcher]

Re: Taiwan Disease Surveillance 2011-2012 Flu Season (Peaked Week 2)

Summary：Week 15 (Apr. 8? Apr. 14, 2012)
Influenza activity in Taiwan peaked at week 2. Seasonal influenza virus type AH3 is predominant in the community.

Of the 197 specimens tested during week 13, 2012, 39 (19.8%) were positive for influenza viruses, 27 (13.7%) were positive for influenza AH3 virus, 9 (4.6%) were positive for influenza B virus, 3 (1.5%) were positive for pandemic (H1N1) 2009 virus.

There were 13 new complicated influenza infections and 9 reports of death from complicated influenza infection during week 15. Since July 1, 2011, 1387 complicated influenza infections have been confirmed, including 1025 cases from influenza B virus infection, 276 cases from influenza A virus infection, 65 cases from pandemic (H1N1) 2009 virus infection and 21 cases due to un-typed influenza A virus infection. 466 cases of complicated influenza infections received the intensive care. Since July 1, 2011, there have been 110 reports of death from complicated influenza infection; 88 from the seasonal influenza B strain, 17 from the seasonal H3N2 strain, 3 from pandemic (H1N1) 2009 virus infection and 2 from the un-typed influenza A virus, respectively.

The number of deaths related to pneumonia and influenza during week 14 was 258, which was above the number of the previous week (254 deaths).

The rate of outpatient visits for influenza-like illness is 1.22%, a 10.3% decrease compared with the rate of previous week (1.36%).

The rate of emergency room visits for ILI is 11.42%, a 8.4% decrease compared with the rate of previous week (12.47%).

http://flu.cdc.gov.tw/lp.asp?ctNode=4091&CtUnit=960&BaseDSD=7&mp=151

[Missouriwatcher]

Re: Taiwan Disease Surveillance 2011-2012 Flu Season (Peaked Week 2)

Week 16: Influenza activity in Taiwan peaked at week 2. Seasonal influenza virus type AH3 is predominant in the community.

Of the 141 specimens tested during week 14, 2012, 16 (11.3&#37 were positive for influenza viruses, 10 (7.1%) were positive for influenza AH3 virus, 3 (2.1%) were positive for pandemic (H1N1) 2009 virus, 2 (1.4%) were positive for influenza B virus and 1 (0.7%) were positive for un-typed influenza A virus.

There were 22 new complicated influenza infections and 14 reports of death from complicated influenza infection during week 16. Since July 1, 2011, 1409 complicated influenza infections have been confirmed, including 1026 cases from influenza B virus infection, 289 cases from influenza AH3(H3N2) virus infection, 71 cases from pandemic (H1N1) 2009 virus infection and 23 cases due to un-typed influenza A virus infection. 473 cases of complicated influenza infections received the intensive care. Since July 1, 2011, there have been 124 reports of death from complicated influenza infection; 96 from the seasonal influenza B strain, 20 from the seasonal H3N2 strain, 6 from pandemic (H1N1) 2009 virus infection and 2 from the un-typed influenza A virus, respectively.

The number of deaths related to pneumonia and influenza during week 15 was 248, which was below the number of the previous week (260 deaths).

The rate of outpatient visits for influenza-like illness is 1.20%, a 1.6% decrease compared with the rate of previous week (1.22%).

The rate of emergency room visits for ILI is 10.42%, a 8.9% decrease compared with the rate of previous week (11.44%).

http://flu.cdc.gov.tw/lp.asp?ctNode=4091&CtUnit=960&BaseDSD=7&mp=151

[Missouriwatcher]

Re: Taiwan Disease Surveillance 2011-2012 Flu Season (Peaked Week 2)

Week 17: Influenza activity in Taiwan peaked at week 2. Seasonal influenza virus type AH3 is predominant in the community.

Of the 157 specimens tested during week 15, 2012, 23 (15%) were positive for influenza viruses, 19 (12%) were positive for influenza AH3 virus, 3 (2%) were positive for pandemic (H1N1) 2009 virus, 1 (1%) were positive for influenza B virus.

There were 23 new complicated influenza infections and 4 reports of death from complicated influenza infection during week 17. Since July 1, 2011, 1432 complicated influenza infections have been confirmed, including 1027 cases from influenza B virus infection, 306 cases from influenza AH3 (H3N2) virus infection, 74 cases from pandemic (H1N1) 2009 virus infection and 25 cases due to un-typed influenza A virus infection. 479 cases of complicated influenza infections received the intensive care. Since July 1, 2011, there have been 128 reports of death from complicated influenza infection; 98 from the seasonal influenza B strain, 22 from the seasonal H3N2 strain, 6 from pandemic (H1N1) 2009 virus infection and 2 from the un-typed influenza A virus, respectively.

The number of deaths related to pneumonia and influenza during week 16 was 281, which was above the number of the previous week (252 deaths).

The rate of outpatient visits for influenza-like illness is 1.17%, a 2.5% decrease compared with the rate of previous week (1.20%).

The rate of emergency room visits for ILI is 10.65%, a 2.2% increase compared with the rate of previous week (10.42%).

http://flu.cdc.gov.tw/lp.asp?ctNode=4091&CtUnit=960&BaseDSD=7&mp=151

[Missouriwatcher]

Re: Taiwan Disease Surveillance 2011-2012 Flu Season (Peaked Week 2)

Week 18 (Apr. 29– May. 5, 2012)
Influenza activity in Taiwan peaked at week 2. Seasonal influenza virus type AH3 is predominant in the community.

Of the 180 specimens tested during week 16, 2012, 25 (14&#37 were positive for influenza viruses, 15 (8%) were positive for influenza AH3 virus, 6 (3%) were positive for pandemic (H1N1) 2009 virus, 3 (2%) were positive for influenza B virus and 1 (1%) positive for un-typed influenza A virus.

There were 12 new complicated influenza infections and 3 reports of death from complicated influenza infection during week 17. Since July 1, 2011, 1444 complicated influenza infections have been confirmed, including 1028 cases from influenza B virus infection, 318 cases from influenza AH3 (H3N2) virus infection, 75 cases from pandemic (H1N1) 2009 virus infection and 23 cases due to un-typed influenza A virus infection. 485 cases of complicated influenza infections received the intensive care. Since July 1, 2011, there have been 131 reports of death from complicated influenza infection; 100 from the seasonal influenza B strain, 23 from the seasonal H3N2 strain, 6 from pandemic (H1N1) 2009 virus infection and 2 from the un-typed influenza A virus, respectively.

The number of deaths related to pneumonia and influenza during week 17 was 281, which was below the number of the previous week (284 deaths).

The rate of outpatient visits for influenza-like illness is 1.10%, a 5.2% decrease compared with the rate of previous week (1.16%).

The rate of emergency room visits for ILI is 10.30%, a 3.4% decrease compared with the rate of previous week (10.66%).

http://flu.cdc.gov.tw/lp.asp?ctNode=4091&CtUnit=960&BaseDSD=7&mp=151