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California 2013-2014 Flu Season Wks 43-32: 10 total Pediatric Deaths

M

mixin

Well-known member
Re: California 2013-2014 Influenza Season Wks 43-44

Re: California 2013-2014 Influenza Season Wks 43-44

Week 44, ending Nov 2

Overall influenza activity in California during Week 44 was ?sporadic*.?

Influenza Report Highlights
* Outpatient influenza-like illness (ILI) increased in Week 44 (1.1%) compared to Week 43 (0.8%).
* Of 705 specimens tested during Week 44,
* 12 (1.8%) were positive for influenza virus; of these
* 2 (16.7%) were influenza B and
* 10 (83.3%) were influenza A
* 1 (10.0%) were subtyped as seasonal A (H3)
* 6 (60.0%) were subtyped as 2009 A (H1)
* 3 (30.0%) were not subtyped

* The California Department of Public Health Viral and Rickettsial Disease Laboratory (CDPH-VRDL) tested two 2009 A (H1) influenza isolates for antiviral resistance to date. Both specimens were sensitive to neuraminidase inhibitors.
* The Centers for Disease Control and Prevention (CDC) has not strain-typed any California specimens to date.
* No influenza-associated deaths were reported during Week 44.
* No cases of novel influenza have been detected in California to date.

* CDC Influenza Sentinel Providers
A total of 77 enrolled sentinel providers have reported data for Week 44, compared to an average of 112 providers reporting for each of the previous weeks. Based on available data, the percentage of visits for ILI in Week 44 (1.1%) was below the epidemic threshold (3.4%).

Laboratory Update
To date for the 2013?2014 season, of 3,502 specimens tested, 43 (1.2%) were positive for influenza; of these, 5 (11.6%) were influenza B and 38 (88.4%) were influenza A. Of the 38 specimens that tested positive for influenza A, 9 (23.7%) were subtyped as seasonal A (H3), 14 (36.8%) were subtyped as 2009 A (H1), and 15 (39.5%) had no further subtyping performed. Positive specimens have been detected throughout the state.

http://www.cdph.ca.gov/programs/dcdc/Documents/Week 44 - Final Report_Website.pdf
 
Re: California 2013-2014 Influenza Season Wks 43-44

Re: California 2013-2014 Influenza Season Wks 43-44

Week 45, ending Nov 9

Overall influenza activity in California duringWeek 45 was ?sporadic*.?

Influenza Report Highlights
? Outpatient influenza-like illness (ILI) increased in Week 45 (2.1%) compared to Week 44 (1.9%).
? Of 865 specimens tested during Week 45, 11 were positive for influenza virus; of these, 2 were influenza B and 9 were influenza A:
? 1 was subtyped as seasonal A (H3)
? 5 were subtyped as 2009 A (H1)
? 3 were not subtyped

? The California Department of Public Health Viral and Rickettsial Disease Laboratory (CDPH-VRDL) tested three 2009 A (H1) influenza isolates for antiviral resistance to date. All specimens were sensitive to neuraminidase inhibitors.
? The Centers for Disease Control and Prevention (CDC) has strain-typed two California 2009 A (H1) influenza specimens to date. Both were strain-typed as A/California/07/2009-like (H1N1), the H1N1 component included in the 2013?2014 vaccine for the Northern Hemisphere.
? No influenza-associated deaths were reported during Week 45.
? No influenza outbreaks have been reported in California to date.
? No cases of novel influenza have been detected in California to date.

Laboratory Update

The percentage of influenza detections in the RLN and sentinel laboratories decreased in Week 45

To date for the 2013?2014 season, of 4,707 specimens tested, 60 (1.3%) were positive for influenza; of these, 8 (13.3%) were influenza B and 52 (86.7%) were influenza A. Of the 52 specimens that tested positive for influenza A, 12 (23.1%) were subtyped as seasonal A (H3), 20 (38.5%) were subtyped as 2009 A (H1), and 20 (38.5%) had no further subtyping performed. Positive specimens have been detected throughout the state.

Laboratory-confirmed Fatal Case Reports (patients aged 0?64 years)
In Week 45, no laboratory-confirmed influenza deaths were reported. To date, one laboratory-confirmed influenza death from Southern California has been reported for the 2013?2014 season.

http://www.cdph.ca.gov/programs/dcdc/Documents/Week 45 - FINAL Report.pdf
 
Re: California 2013-2014 Influenza Season Wks 43-45

Re: California 2013-2014 Influenza Season Wks 43-45

Week 46, ending Nov 16

Influenza activity: Sporadic

Of 1032 specimens tested:
15 were positive; all were influenza A.
Of those, 3 were H3, 4 were 2009 H1N1, 8 were not subtyped.

The California Dept. tested 3 2009 H1 isolates for antiviral resistance; all 3 were sensitive to neuraminidase inhibitors.

No influenza-associated deaths were reported.
No influenza outbreaks have been reported to date.
No cases of novel influenza have been detected to date.

The percentage of ILI visits were 1.2%, which is below the epidemic threshold of 3.5%.

http://www.cdph.ca.gov/programs/dcdc/Documents/Week 46 - FINAL Report.pdf
 
Re: California 2013-2014 Influenza Season Wks 43-48

Re: California 2013-2014 Influenza Season Wks 43-48

Week 48, ending Nov 30

Overall influenza activity in California during Week 48 was ?sporadic*.?

Influenza Report Highlights
? Outpatient influenza-like illness (ILI) decreased in Week 48 (1.3%) compared to Week 47 (2.1%).

? Of 1007 specimens tested during Week 48,
o) 28 (2.8%) were positive for influenza virus; of these
) 2 (7.1%) were influenza B and
) 26 (92.9%) were influenza A
? 1 (3.8%) was subtyped as seasonal A (H3)
? 7 (26.9%) were subtyped as 2009 A (H1)
? 18 (69.2%) were not subtyped.

? The California Department of Public Health Viral and Rickettsial Disease Laboratory (CDPH-VRDL) has tested seven 2009 A (H1) influenza isolates and three A (H3) influenza isolates for antiviral resistance to date. All specimens were sensitive to neuraminidase inhibitors.

? The Centers for Disease Control and Prevention (CDC) has strain-typed five California 2009 A (H1) influenza specimens to date. All were strain-typed as A/California/07/2009-like (H1N1), the H1N1 component included in the 2013?2014 vaccine for the Northern Hemisphere.

? No influenza outbreaks have been reported in California to date.
? No cases of novel influenza have been detected in California to date.

CDC Influenza Sentinel Providers
A total of 78 enrolled sentinel providers have reported data for Week 48, compared to an average of 124 providers reporting for each of the previous weeks. Based on available data, the percentage of visits for ILI in Week 48 (1.3%) was below the epidemic threshold (3.8%).

Kaiser Permanente Hospitalization Data
The percentage of hospitalizations for pneumonia and influenza (P&I) in Kaiser Permanente facilities in northern and southern California increased during Week 48 (4.8%), compared to Week 47 (4.4%). The percentage was below the epidemic threshold (6.1%) during Week 48.

Respiratory Laboratory Network (RLN) and Sentinel Laboratory Surveillance Results
To date for the 2013?2014 season, of 7,581 specimens tested, 128 (1.7%) were positive for influenza; of these, 12 (9.4%) were influenza B and 116 (1.5%) were influenza A. Of the 116 specimens that tested positive for influenza A, 17 (14.7%) were subtyped as seasonal A (H3), 37 (31.9%) were subtyped as 2009 A (H1), and 62 (53.4%) had no further subtyping performed. Positive specimens have been detected throughout the state.

Laboratory-confirmed Fatal Case Reports
During Week 48, no laboratory-confirmed influenza deaths were reported. To date, one laboratory-confirmed influenza death from Southern California has been reported for the 2013?2014 season.

http://www.cdph.ca.gov/programs/dcdc/Documents/Week 48 - FINAL Report.pdf
 
Re: California 2013-2014 Influenza Season Wks 43-49

Re: California 2013-2014 Influenza Season Wks 43-49

Week 49, ending Dec 7

Overall influenza activity in California during Week 49 was ?sporadic*.?

Influenza Report Highlights:
? Outpatient influenza-like illness (ILI) decreased in Week 49 (2.0%) compared to Week 48 (2.4%).
? Of 1113 specimens tested during Week 49,
o) 58 (5.2%) were positive for influenza virus; of these
* 2 (3.4%) were influenza B and
* 56 (96.6%) were influenza A
? 2 (3.6%) were subtyped as seasonal A (H3)
? 23 (41.1 %) were subtyped as 2009 A (H1)
? 31 (55.4%) were not subtyped.

? The California Department of Public Health Viral and Rickettsial Disease Laboratory (CDPH-VRDL) has tested ten 2009 A (H1) influenza isolates and five A (H3) influenza isolates for antiviral resistance to date. All specimens were sensitive to neuraminidase inhibitors.

? The Centers for Disease Control and Prevention (CDC) has strain-typed eight 2009 A (H1N1) and two AH3N2 influenza specimens from California to date. These were strain-typed as A/California/07/2009-like (H1N1) and A/Texas/50/2012-like (H3N2), respectively; the H1N1 and H3N2 components included in the 2013?2014 vaccine for the Northern Hemisphere.

? One influenza-associated death was reported during Week 49.

? No influenza outbreaks have been reported in California to date.

? No cases of novel influenza have been detected in California to date.

CDC Influenza Sentinel Providers:
A total of 74 enrolled sentinel providers have reported data for Week 49, compared to an average of 121 providers reporting for each of the previous weeks. Based on available data, the percentage of visits for ILI in Week 49 (2.0%) was below the epidemic threshold (3.8%)

Kaiser Permanente Hospitalization Data:
The percentage of hospitalizations for pneumonia and influenza (P&I) in Kaiser Permanente facilities in northern and southern California decreased during Week 49 (4.9%), compared to Week 48 (5.2%). The percentage was below the epidemic threshold (6.1%) during Week 49.

http://www.cdph.ca.gov/programs/dcdc/Documents/Week 49 - FINAL Report.pdf
 
Re: California 2013-2014 Influenza Season Wks 43-50

Re: California 2013-2014 Influenza Season Wks 43-50

Week 50, ending Dec 14

Influenza Activity: Local

Laboratory-confirmed Fatal Case Reports
In Week 50, CDPH received the third report of an influenza-associated death for the 2013-2014 season.
The case-patient was an adult from central California who had co-morbid conditions considered by the Advisory Committee on Immunization Practices (ACIP) as risk factors for severe influenza. The patient tested positive for 2009 influenza A (H1) by PCR.

California Influenza Report Highlights
• Outpatient influenza-like illness (ILI) increased in Week 50 (2.5%) compared to Week 49 (2.1%).
• Of 1249 specimens tested during Week 50,
- 108 (8.6%) were positive for influenza virus; of these
* 7 (6.5%) were influenza B and
* 101 (93.5%) were influenza A
• 2 (2.0%) were subtyped as seasonal A (H3)
• 51 (50.5 %) were subtyped as 2009 A (H1)
• 48 (47.5%) were not subtyped.
• The California Department of Public Health Viral and Rickettsial Disease Laboratory (CDPH-VRDL) has tested ten 2009 A (H1) influenza isolates and five A (H3) influenza isolates for antiviral resistance to date. All specimens were sensitive to neuraminidase inhibitors.
• The Centers for Disease Control and Prevention (CDC) has strain-typed eight 2009 A (H1N1) and two A (H3N2) influenza specimens from California to date. These were strain-typed as A/California/07/2009-like (H1N1) and A/Texas/50/2012-like (H3N2), respectively, strains identical to the H1N1 and H3N2 components included in the 2013–2014 vaccine for the Northern Hemisphere.
• One influenza-associated death was reported during Week 50.
• No influenza outbreaks have been reported in California to date.
• No cases of novel influenza have been detected in California to date.

California Border Region Influenza Highlights
• Outpatient influenza-like-illness (ILI) for the California border region increased in Week 50 (1.59%) compared to Week 49 (1.15%).
• Of the 155 respiratory specimens tested in the California border region during Week 50,
- 15 (10%) were positive for influenza; of these
* None were influenza B
* 15 (100%) were influenza A
• 1 (7%) was subtyped as seasonal A (H3)
• 8 (53%) were subtyped as 2009 A (H1)
• 6 (40%) had no further subtyping performed

CDC Influenza Sentinel Providers
A total of 79 enrolled sentinel providers have reported data for Week 50, compared to an average of 119 providers reporting for each of the previous weeks. Based on available data, the percentage of visits for ILI in Week 50 (2.5%) was below the epidemic threshold (3.9%)

Kaiser Permanente Hospitalization Data
The percentage of hospitalizations for pneumonia and influenza (P&I) in Kaiser Permanente facilities in northern and southern California decreased slightly during Week 50 (4.8%), compared to Week 49 (4.9%). The percentage was below the epidemic threshold (6.4%) during Week 50.

http://www.cdph.ca.gov/programs/dcdc/Documents/Week 50 - FINAL Report.pdf
 
Re: California 2013-2014 Influenza Season Wks 43-52

Re: California 2013-2014 Influenza Season Wks 43-52

Note: I didn't find wk 51 report

Week 52, ending Dec 28

Overall influenza activity in California during Week 52 was ?regional*.?

Laboratory-confirmed Fatal Case Reports
In Week 51, CDPH received the fourth report of an influenza-associated death for the 2013-2014 season. The case-patient was from Alameda county and tested positive for 2009 influenza A (H1) by PCR. No influenza-associated deaths were reported during week 52. All influenza-associated deaths reported to date have been among adults.

Hospitalization Surveillance Update
The percentage of hospitalizations for pneumonia and influenza (P&I) in Kaiser Permanente facilities in northern and southern California increased during Week 52 (7.7%), compared to Week 51 (5.1%). The percentage exceeded the epidemic threshold (6.7%) during Week 50.

Influenza-associated Outbreaks
CDPH received its first report of a laboratory-confirmed influenza outbreak during Week 51. The outbreak occurred in a congregate living facility in southern California and was caused by influenza A. No outbreak reports were received during Week 52.

California Influenza Report Highlights
? Outpatient influenza-like illness (ILI) increased in Week 52 (3.4%) compared to Week 51 (2.6%).
? Of 1,945 specimens tested during Week 52,
o 442 (22.7%) were positive for influenza virus; of these
 23 (5.2%) were influenza B and
 419 (94.8%) were influenza A
? 3 (0.7%) were subtyped as seasonal A (H3)
? 72 (17.2%) were subtyped as 2009 A (H1)
? 344 (82.1%) were not subtyped.

California Border Region Influenza Surveillance
The next update on influenza surveillance in the California Border Region will be for Week 1.

http://www.cdph.ca.gov/programs/dcdc/Documents/Week 52 - FINAL Report.pdf
 
Re: California 2013-2014 Flu Season Wks 43-01

Re: California 2013-2014 Flu Season Wks 43-01

Wk 01, ending Jan 4

During Week 1, 3 laboratory-confirmed influenza deaths were reported; all were confirmed as 2009 A (H1N1). These deaths occurred in Lassen, Sacramento, and San Francisco counties; all were adults. As of Week 1, a total of 7 laboratory-confirmed influenza deaths have been reported for the 2013?2014 season, compared to four laboratory-confirmed influenza deaths reported as of Week 1 during the 2012-2013 influenza season.
The weekly influenza report includes confirmed deaths formally reported to CDPH as of January 4, 2014 (Week 1). Twenty-eight deaths were reported to CDPH after this date and are currently being investigated. Deaths will be included in the report for the week they are confirmed.

During Week 1, two laboratory-confirmed influenza outbreaks were reported. To date, three laboratory-confirmed influenza outbreaks have been reported for the 2013?2014 season. All outbreaks occurred in congregate living facilities and were caused by influenza A.

The percentage of hospitalizations for pneumonia and influenza (P&I) in Kaiser Permanente facilities in northern and southern California increased during Week 1 (9.3%), compared to Week 52 (7.8%). The percentage exceeded the epidemic threshold (6.7%) during Week 1. The percentage of sentinel provider visits for ILI in Week 1 (5.2%) was above the epidemic threshold (4.1%)

Influenza Report Highlights
 Outpatient influenza-like illness (ILI) during Week 1 (5.2%) exceeded expected levels for this time of year.
 Of 3,431 specimens tested during Week 1,
o 980 (28.6%) were positive for influenza virus; of these
 34 (1.0%) were influenza B and
 946 (27.6%) were influenza A
 11 (1.2%) were subtyped as seasonal A (H3)
 249 (26.3%) were subtyped as 2009 A (H1)
 686 (72.5%) were not subtyped.  Three laboratory-confirmed influenza deaths were reported during Week 1.  Two laboratory-confirmed influenza outbreaks were reported during Week 1.  No cases of novel influenza have been detected in California to date.

California Border Region Influenza Highlights
 Outpatient influenza-like-illness (ILI) for the California border region increased in Week 1 (5.9%), compared to Week 52 (3.9%).
 Of the 565 respiratory specimens tested in the California border region during Week 1,
o 85 (15%) were positive for influenza; of these
 24 (28%) were influenza B
 61 (72%) were influenza A
 28 (46%) were subtyped as 2009 A (H1)
 33 (54%) had no further subtyping performed

http://www.cdph.ca.gov/HealthInfo/discond/Documents/Week 1 - FINAL Report.pdf
 
Re: California 2013-2014 Flu Season Wks 43-02: 2 New Pediatric Deaths, 2 Total

Re: California 2013-2014 Flu Season Wks 43-02: 2 New Pediatric Deaths, 2 Total

Wk 02, ending Jan 11

Note: these are not included in wk 02 MMWR/CDC reports
2 new pediatric deaths were reported this week.

During Week 2, 38 laboratory-confirmed influenza deaths were reported. Two of these deaths were in pediatric cases from Los Angeles and San Mateo County. Of the 38 fatalities reported during Week 2, 22 (57.9%) had data available on underlying medical conditions. Of these, 14 (63.6%) had co-morbid conditions considered by the Advisory Committee on Immunization Practices (ACIP) to increase the risk for severe influenza, 6 (27.3%) had other underlying medical conditions, and 2 (9.1%) were previously healthy. The fatalities were reported from the following counties: Alameda (2), Contra Costa (1), Kern (1), Kings (2), Los Angeles (3), Marin (2), Mendocino (1), Merced (2), Orange (3), Riverside (1), Sacramento (4), San Bernardino (4), San Diego (3), San Mateo (2), Santa Barbara (1), Santa Clara (3), Sonoma (1), and Stanislaus (2).

To date for the 2013-2014 season, 45 laboratory-confirmed influenza deaths have been reported to CDPH. Of the 45 fatalities, 42 were positive for influenza A, 1 was positive for influenza B, and 2 were positive for influenza but pending information for type. Of the 42 positive for influenza A, 0 (0%) were subtyped A (H3), 36 (81%) were subtyped 2009 A (H1N1), and 6 (13%) were not subtyped. By Week 2 of the 2012-2013 season, CDPH had received a total of 5 influenza fatalities.

The weekly influenza report includes confirmed deaths formally reported to CDPH as of January 11, 2014 (Week 2). Fifty deaths were reported to CDPH after this date and are currently being investigated. Deaths will be included in the report for the week they are confirmed.

During Week 2, two laboratory-confirmed influenza outbreaks were reported. The outbreaks occurred in San Mateo and Sonoma counties. To date, five laboratory-confirmed influenza outbreaks have been reported for the 2013?2014 season. All outbreaks occurred in congregate living facilities and were caused by influenza A.

Influenza Report Highlights
? Outpatient influenza-like illness (ILI) during Week 2 (4.5%) exceeded expected levels for this time of year. Statewide, the percentage of outpatient visits for ILI decreased in Week 2 compared to Week 1 (5.4%).
o Outpatient ILI for the California border region decreased in Week 2 (4.1%) compared to Week 1 (4.9%)
? Of 4,441 specimens tested during Week 2,
o 1,463 (32.9%) were positive for influenza virus; of these
 43 (1.0%) were influenza B and
 1,420 (32.0%) were influenza A
? 15 (1.1%) were subtyped as seasonal A (H3)
? 419 (29.5%) were subtyped as 2009 A (H1)
? 986 (69.4%) were not subtyped.
o Of the 702 specimens tested in the California border region during Week 2, 228 (32%) were positive for influenza

http://www.cdph.ca.gov/HealthInfo/discond/Documents/Week 2 - FINAL Report.pdf
 
Re: California 2013-2014 Flu Season Wks 43-03 = 1 New Pediatric Death, 3 Total

Re: California 2013-2014 Flu Season Wks 43-03 = 1 New Pediatric Death, 3 Total

Wk 03, ending Jan 18

Note: The two I posted for last week were reported this week by the CDC

1 New pediatric death was reported this week (to be in wk 04 CDC report)

Fifty laboratory-confirmed influenza deaths were reported during Week 3. By Week 3 of the 2012-2013 season, CDPH had received reports on a total of 9 influenza fatalities.

Fifty-one deaths were reported to CDPH after Jan 18 and are currently being investigated. Deaths will be included in the report for the week they are confirmed.

Laboratory-Confirmed Fatal Case Reports
During Week 3, 50 laboratory-confirmed influenza deaths were reported. One of these deaths was in a child from Riverside County. The fatalities were reported from the following counties: Contra Costa (1), El Dorado (1), Fresno (5), Humboldt (1), Kern (3), Kings (1), Long Beach (1), Los Angeles (4), Merced (1), Monterey (2), Nevada (1), Orange (1), Riverside (2), Sacramento (5), San Bernardino (3), San Diego (3), San Joaquin (3), San Mateo (1), Santa Clara (4), Santa Cruz (1), Shasta (1), Siskiyou (1), Solano (1), Sonoma (2), and Tulare (1).

To date for the 2013-2014 season, 95 laboratory-confirmed influenza deaths have been reported to CDPH. Of the 95 fatalities, 93 (97.9%) were positive for influenza A, 1 (1.1%) was positive for influenza B, and 1 (1.1%) was positive for influenza but the type is pending. Of the 93 positive for influenza A, 0 (0%) were subtyped A (H3), 75 (80.6%) were subtyped 2009 A (H1N1), and 18 (19.4%) were not subtyped. Sixty-five (68.4%) of the 95 fatalities had data available on underlying medical conditions. Of these, 53 (81.5%) had co-morbid conditions considered by the Advisory Committee on Immunization Practices (ACIP) to increase the risk for severe influenza, 10 (18.9%) had other underlying medical conditions, and 2 (2.1%) were previously healthy.

Influenza-Associated Outbreaks
During Week 3, 5 new laboratory-confirmed influenza outbreaks were reported from the following counties: Alameda, Fresno, Imperial, Sonoma, and Tulare. All were in congregate settings. Two were in prisons and 3 were in health facilities (skilled nursing facility [1] and independent living facility [2]). All 5 were associated with influenza A; 4 of the 5 were subtyped as 2009 A (H1N1) and 1 was not subtyped.

http://www.cdph.ca.gov/HealthInfo/discond/Documents/Week 3 - FINAL Report.pdf
 
Re: California 2013-2014 Flu Season Wks 43-08: 2 New Pediatric Death, 6 Total

Re: California 2013-2014 Flu Season Wks 43-08: 2 New Pediatric Death, 6 Total

Wk 04, ending Jan 28

During Week 4, 52 laboratory-confirmed influenza fatalities were reported. One of the newly reported fatalities was in a child <18 years of age.

To date for the 2013-2014 season, 147 laboratory-confirmed influenza fatalities have been reported to CDPH. Of the 147 fatalities, 144 (97.9%) were positive for influenza A, 1 (0.7%) was positive for influenza B, 1 (0.7%) was positive for both influenza A and B, and 1 (0.7%) was positive for influenza but the type is pending. Of the 144 positive for influenza A, 0 (0%) were subtyped A (H3), 112 (77.8%) were subtyped 2009 A (H1N1), and 32 (22.2%) were not subtyped.

One-hundred and twenty-one (82.3%) of the 147 fatalities had data available on underlying medical conditions. Of these, 94 (77.7%) had co-morbid conditions considered by the Advisory Committee on Immunization Practices (ACIP) to increase the risk for severe influenza, 22 (18.2%) had other underlying medical conditions, and 5 (4.1%) were previously healthy.

By Week 4 of the 2012-2013 season, CDPH had received reports on a total of 14 influenza fatalities.

The weekly influenza report includes confirmed deaths formally reported to CDPH as of January 25, 2014 (Week 4). Forty-four fatalities were reported to CDPH after this date and are currently being investigated. Deaths will be included in the report for the week they are confirmed.

Antiviral Resistance Testing
The CDPH-VRDL has tested 41 2009 A (H1) influenza specimens and 7 A (H3) influenza specimens for antiviral resistance to date during the 2013?2014 influenza season (Table 2). One 2009 A (H1) specimen was found to be resistant to oseltamivir.

Influenza-Associated Outbreaks
During Week 4, 4 new laboratory-confirmed influenza outbreaks were reported from the following counties: Tulare, Stanislaus, Nevada, and San Luis Obispo. All were in congregate settings. All were associated with influenza A and subtyped as 2009 A (H1N1).

*************
California Border Region Influenza Surveillance Network Data
The total number of patients screened by all sentinel sites for ILI during Week 4 was 4,606. Outpatient ILI activity increased by 2.9% from Week 3 (5.0% ILI) to Week 4 (7.9% ILI). ILI activity for the California border region was higher for Week 4 when compared to activity for the same weeks during the 2011?2012 and 2012?2013 influenza seasons (Figure 1). All influenza syndromic data summarized for the border region represents a subset of CDC influenza sentinel providers in California.

http://www.cdph.ca.gov/HealthInfo/discond/Documents/Week 4 - FINAL Report.pdf
 
Re: California 2013-2014 Flu Season Wks 43-08: 2 New Pediatric Deaths, 6 Total

Re: California 2013-2014 Flu Season Wks 43-08: 2 New Pediatric Deaths, 6 Total

Wk 5, ending Feb 1

56 laboratory-confirmed influenza deaths were reported during Week 5.
41 fatalities were reported to CDPH after Feb 1 and are currently being investigated. Deaths will be included in the report for the week they are confirmed.
To date for the 2013-2014 season, 202 laboratory-confirmed influenza fatalities have been reported to CDPH.
By Week 5 of the 2012-2013 season, CDPH had received reports on a total of 18 influenza fatalities.

http://www.cdph.ca.gov/HealthInfo/discond/Documents/Week 5 - FINAL Report.pdf

Wk 6, ending Feb 8

41 laboratory-confirmed influenza deaths were reported during Week 6.
6 laboratory-confirmed influenza outbreaks were reported during Week 6.
41 fatalities were reported to CDPH after Feb 8 and are currently being investigated. Deaths will be included in the report for the week they are confirmed.
http://www.cdph.ca.gov/HealthInfo/discond/Documents/Week 6 - FINAL Report_Updated.pdf


Wk 7, ending Feb 15

35 laboratory-confirmed influenza deaths were reported during Week 7.
10 laboratory-confirmed influenza outbreaks were reported during Week 7
29 fatalities were reported to CDPH after Feb 15 and are currently being investigated. Deaths will be included in the report for the week they are confirmed.
During Week 7, 2,077 specimens were tested for RSV and 375 (18.1%) were positive, which represents an increase compared to Week 6 (12.8%).
http://www.cdph.ca.gov/HealthInfo/discond/Documents/Week 7 - FINAL Report.pdf

Wk 8, ending Feb 22

24 laboratory-confirmed influenza deaths were reported during Week 8.
19 fatalities were reported to CDPH after this date and are currently being investigated.

To date for the 2013?2014 season, 302 laboratory-confirmed influenza fatalities have been reported to CDPH, of which 6 occurred among children <18 years of age.
* Of the 302 fatalities, 295 (97.7%) were positive for influenza A, 4 (1.3%) were positive for influenza B, 1 (0.3%) was positive for influenza A and B, and 2 (0.7%) were positive for influenza but the type is not known.
* Of the 295 positive for influenza A, 4 (1.4%) were subtyped A (H3), 218 (73.9%) were subtyped 2009 A (H1N1), and 73 (24.7%) were not subtyped.

Two hundred sixty-seven (88.4%) of the 302 fatalities had data available on underlying medical conditions.
* Of these, 203 (76.0%) had co-morbid conditions considered by the Advisory Committee on Immunization Practices (ACIP) to increase the risk for severe influenza,
* 43 (16.1%) had other underlying medical conditions
* 21 (7.9%) were previously healthy.

The influenza-associated fatalities have been reported from the following local health jurisdictions: Alameda (6), Butte (1), Calaveras (2), Contra Costa (6), El Dorado (2), Fresno (21), Glenn (1), Humboldt (1), Imperial (1), Kern (10), Kings (6), Lake (1), Lassen (1), Long Beach (7), Los Angeles (44), Madera (2), Marin (2), Mendocino (4), Merced (5), Monterey (5), Nevada (1), Orange (13), Riverside (13), Sacramento (25), San Bernardino (23), San Diego (25), San Francisco (3), San Joaquin (7), San Luis Obispo (1), San Mateo (6), Santa Barbara (3), Santa Clara (15), Santa Cruz (3), Shasta (3), Siskiyou (2), Solano (3), Sonoma (7), Stanislaus (13), Sutter (1), Tulare (3), Tuolumne (1), and Ventura (3). By Week 8 of the 2012‒2013 season, CDPH had received reports on a total of 34 influenza fatalities.

1 laboratory-confirmed influenza outbreak was reported during Week 8.
To date, 35 laboratory-confirmed influenza outbreaks have been reported to CDPH for the 2013?2014 season. All outbreaks occurred in congregate settings. One was associated with influenza B. Thirty-three were associated with influenza A; 5 were subtyped as A (H3), 18 were subtyped as 2009 A (H1N1), and 11 were not subtyped.

California Border Region Influenza Surveillance Network Data
A total of 11 border region sentinel providers reported data during Week 8 compared to 12 during Week 7 of 2014. The total number of patients screened by all sentinel sites for ILI during Week 8 was 3,992. Outpatient ILI activity decreased by 0.6% fromWeek 7 (3.4% ILI) to Week 8 (2.8% ILI). ILI activity for the California border region was higher for Week 8 when compared to activity for the same weeks during the 2012?2013 and the 2011?2012 influenza seasons.

Cumulatively this season, a total of 8,241 respiratory specimens have been tested from border region clinics; of these, 1,648 (20.0%) tested positive for influenza. Of the influenza positive specimens 1,036 (62.9%) were influenza A and 612 (37.1%) were influenza B. Of the 1,036 specimens that tested positive for influenza A, 31 (3.0%) were A (H3), 225 (21.7%) were 2009 A (H1), and 780 (75.3%) had no subtyping performed. For Week 8, a total of 480 respiratory specimens were submitted for testing; of these, 53 (11.0%) were positive for influenza virus. Of the positive specimens 10 (18.9%) were influenza A, and 43 (81.1%) were influenza B. All 10 specimens that tested positive for influenza A had no subtyping performed.

http://www.cdph.ca.gov/HealthInfo/discond/Documents/Week 8 - FINAL Report.pdf
 
Re: California 2013-2014 Flu Season Wks 43-11: 1 New Pediatric Deaths, 8 Total

Re: California 2013-2014 Flu Season Wks 43-11: 1 New Pediatric Deaths, 8 Total

Wk 11, ending Mar 15

One new pediatric death was reported in week 13 by the CDC. California reporting is 2 weeks behind so I'm including it in this report.

Hospitalizations for pneumonia and influenza (P&I) during Week 11 (5.4%) were within expected levels for this time of the year. Statewide, the percentage of hospitalizations for P&I slightly increased in Week 11 compared to Week 10 (5.3%).
? Of 1,462 specimens tested during Week 11,
o 54 (3.7%) were positive for influenza virus; of these
25 (46.3%) were influenza B and
 29 (53.7%) were influenza A
? 4 (13.8%) were subtyped as seasonal A (H3)
? 10 (34.5%) were subtyped as 2009 A (H1)
? 15 (51.7%) were not subtyped.
? Ten laboratory-confirmed influenza deaths were reported during Week 11
? Five laboratory-confirmed influenza outbreaks that occurred previously were confirmed in Week 11.
? No cases of novel influenza have been detected in California to date.

Antiviral Resistance Testing
The CDPH-VRDL has tested 87 2009 A (H1) influenza specimens, 50 A (H3) influenza specimens, and 24 influenza B specimens for antiviral resistance to date during the 2013?2014 influenza season. Three 2009 A (H1) specimen were found to be resistant to Oseltamivir.

Laboratory-Confirmed Severe Influenza Case Reports
To date for the 2013?2014 season, 342 laboratory-confirmed influenza fatalities have been reported to CDPH, of which 7 (8 currently) occurred among children <18 years of age. By Week 11 of the 2012‒2013 season, CDPH had received reports on a total of 52 influenza fatalities.

Of the 342 fatalities, 337 (98.5%) were positive for influenza A, 4 (1.2%) were positive for influenza B, and 1 (0.3%) was positive for influenza A and B. Of the 337 positive for influenza A, 5 (1.5%) were subtyped A (H3), 249 (73.9%) were subtyped 2009 A (H1N1), and 83 (24.6%) were not subtyped. Of the 342 fatalities, 307 (89.8%) had data available on underlying medical conditions.

Of these, 233 (75.9%) had co-morbid conditions considered by the Advisory Committee on Immunization Practices (ACIP) to increase the risk for severe influenza, 51 (16.6%) had other underlying medical conditions, and 23 (7.5%) were previously healthy.

The influenza-associated fatalities have been reported from the following local health jurisdictions: Alameda (8), Butte (1), Calaveras (2), Contra Costa (7), El Dorado (2), Fresno (22), Glenn (1), Humboldt (1), Imperial (2), Kern (9), Kings (7), Lake (1), Lassen (1), Long Beach (7), Los Angeles (57), Madera (3), Marin (2), Mendocino (4), Merced (5), Monterey (5), Nevada (1), Orange (15), Riverside (17), Sacramento (27), San Bernardino (25), San Diego (32), San Francisco (3), San Joaquin (7), San Luis Obispo (1), San Mateo (6), Santa Barbara (3), Santa Clara (18), Santa Cruz (3), Shasta (3), Siskiyou (2), Solano (3), Sonoma (6), Stanislaus (13), Sutter (1), Tulare (4), Tuolumne (1), Ventura (3), and Yolo (1).

http://www.cdph.ca.gov/HealthInfo/discond/Documents/Week 11 - FINAL Report.pdf
 
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