PDF SC Flu Watch

Flu Watch

South Carolina Department of Health and Environmental Control

Division of Acute Disease Epidemiology

Week Ending January 2, 2016 (MMWR Week 52)

All data are provisional and may change as more reports are received.

In this issue:

Summary

2

I. Confirmatory testing

3

II. Positive rapid tests

6

III. ILINet

7

IV. Hospitalizations and deaths 10

V. National influenza

12

surveillance

VI. SC influenza surveillance 13

components

VII. Definitions for influenza

14

surveillance

MMWR Week 52 at a Glance:

Influenza Activity Synopsis:

During MMWR week 52 influenza activity in South Carolina overall influenza remained low. South Carolina reported SPORADIC activity.

Laboratory surveillance:

112 laboratory-confirmed cases of influenza were reported from 24 counties.

Of the positive specimens reported this season, 1,019 (58.2%) are influenza A, 644 (36.8%) are influenza B, 78 (4.5%) are influenza A/B, and 10 (0.6%) are influenza unknown subtype.

ILI Activity (South Carolina baseline is 2.05%):

The percentage of visits to sentinel providers for influenzalike illness (6.00%) was above South Carolina's baseline. ILI percentages represent ILI activity reported by less than half of enrolled sentinel providers. Therefore, ILI percentages may not be representative of actual flu activity.

Hospitalizations:

10 laboratory confirmed influenza-associated hospitalizations were reported. Since October 4, 2015, 182 laboratory confirmed influenza associated hospitalizations have been reported.

Deaths:

One laboratory confirmed influenza-associated death was reported. Since October 4, 2015 nine laboratory confirmed influenza associated deaths have been reported.

Summary of Laboratory Confirmed Tests, ILI Activity, Influenza Associated Hospitalizations and Deaths Compared to Previous Week and Previous Season

Current week

Number of positive confirmatory tests (culture, RT-PCR, DFA, IFA)

Positive rapid antigen tests

Percent of ILI visits reported by ILINet providers

Number of lab confirmed flu hospitalizations

Number of lab confirmed flu deaths

1

111 6.00%

10 1

Previous week

Change from previous week

Cumulative Cumulative (2015-16) (2014-15)

Cumulative change 2015-16 compared to

2014-15

0

6

291

97.9%

126 5.56%

14 0

11.9% 0.44% 28.6%

1,746 -182 9

26,148 --

1,166 27

93.3% --

84.4% 66.7%



2

I. Confirmatory testing

Positive confirmatory influenza test results* Current MMWR Week (12/27/15 ? 1/2/16)

BOL and reference labs

Number of positive confirmatory tests

1

Influenza A unsubtyped

0

Influenza A H1N1

0

Influenza A H3N2

0

Influenza B

1

Other

0

Includes culture, RT-PCR, DFA, and IFA

For the current MMWR reporting week, One positive confirmatory test was reported.

Positive confirmatory influenza test results* Cumulative (10/4/15 ? 1/2/16)

BOL and reference labs

Number of positive confirmatory tests

6

Influenza A unsubtyped

2

Influenza A H1N1

0

Influenza A H3N2

3

Influenza B

1

Other

0

Includes culture, RT-PCR, DFA, and IFA



3

*Includes culture, PCR, DFA, IFA



4

Map of all Laboratory Confirmed Cases (n)* and Population Case Rates/100,000 by County Cumulative 10/4/15 ? 1/2/16

Number of cases 0 1-50 51-100 101-200 201-300 301-500 >500

*Includes all laboratory tests (rapid antigen, culture, PCR, IFA, DFA.)



5

 ................
................

In order to avoid copyright disputes, this page is only a partial summary.

Google Online Preview   Download