Health

INFLUENZA ACTIVITY WIDESPREAD IN SOUTH DAKOTA LAST WEEK

South Dakota Influenza summary for the week ending December 23, 2017
December 29, 2017

·      121 new confirmedcases of influenza were reported last week.   421 confirmed cases cumulative so far this season:  384 Influenza A and 37 Influenza B.  *Lab confirmed:  PCR, culture or DFA. The number of laboratories using rapid confirmatory tests has increased, which may account for some of the increase in confirmed cases observed this influenza season.

·      17.4% positive rapid antigen tests reported statewide (122 positives out of 702 individuals tested last week).    Total 6,294 tests performed so far this season.

·      19 new influenza-associated hospitalizations reported last week (Brookings, Codington, Day, Grant, Hamlin, Jackson, Lawrence, Lincoln, Mellette, Minnehaha, Oglala Lakota, Pennington, Tripp, Walworth, and Yankton counties).  Total of 68 hospitalizations so far this season.

·      One influenza-associated death reported last week (Davison County). Total of 2 deaths so far this season.

·      2.58% of clinic visits were for influenzalike illness (ILI), 34.1% of ILI visits were children 4 years of age and younger.

·      1.8% of K12 students were absent due to any illness, range 0% – 8% absent (56 schools reporting).

South Dakota Dept of Health

 

Season

Dominate virus

Deaths

Hospitalizations

Confirmed cases (Culture, PR, DFA)

Peak week

2017-2018

Pending

2

68

421

Pending

        2016-2017

A(H3N2)

44

965

2,078

February 3rd week

2015-2016

A(H1N1)

9

161

786

March 2nd week

2014-2015

A(H3N2)

63

793

1,703

January 1st week

2013-2014

A(H1N1)

14

239

659

January 1st week

2012-2013

A(H3N2)

38

365

993

January 2nd week

2011-2012

A(H3N2)

17

164

505

March 3rd week

2010-2011

A(H3N2)

20

290

860

February 3rd week

2009-2010

A(H1N1) pandemic

24

431

2,303

October 2nd week

2008-2009

A(H1N1)

4

134

525

March 1st week

2007-2008

A(H3N2)

22

361

684

February 4th week

2006-2007

A(H1N1)

6

132

400

February 3rd week

2005-2006

A(H3N2)

11

 Not reportable

636

March 2nd week

2004-2005

A(H3N2)

42

 Not reportable

684

February 3rd week

Median (2004-2017)

 

20

290

860

February 3rd week

Influenza surveillance website:  http://flu.sd.gov.

National Synopsis:   Influenza activity sharply increased in the past week in the United States.  Nationally, 89% influenza A and 11% influenza B of 831 positive specimens tested in public health laboratories.

Influenza activity by state:

–    WIDESPREAD (highest level) influenza activity in 36 states; including South Dakota;

–    REGIONAL activity in 13 states;

–    LOCAL activity in 1 states

–    SPORADIC activity in 0 states;

–    NO activity in 0 states.

Our neighboring states:

–   WIDESPREAD activity: North Dakota, Minnesota, Nebraska, Wyoming Montana and
South Dakota.

–   REGIONAL activity: Iowa

Categories: Health, South Dakota

Leave a Reply

Please log in using one of these methods to post your comment:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google+ photo

You are commenting using your Google+ account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

w

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.