Laura Johnson Office of Shellfish and Water Protection February 19, Public Health Always Working for a Safer and Healthier Washington

Transcription

1 Laura Johnson Office of Shellfish and Water Protection February 19, 2015 Public Health Always Working for a Safer and Healthier Washington

2 2014 Season Vibrio parahaemolyticus Illnesses Closures and time-totemperature reductions Environmental monitoring Outreach Other Vibrios Control Plan Rule Revision 2

3 Commercial shellstock oysters Single-source 26 Multi-source WA only WA and other states and provinces Other commercial products Shucked oysters 3 Steamed clams 1 Other Documented post harvest abuse 18 No traceback 7 Non-commercial Clams (geoduck and butter) 2 Crab 2 Oysters Raw Cooked Both Salmon 1 3

4 120 Total Vibrio Illnesses from Oyster Consumption (Attributed to Washington State Growing Areas by Year) 100 Number of IIll ndividuals Year Single Source Multi Source Recreational 4

5 Growing Area Harvest Reduction Date TTC Reduction Hood Canal 6 5/28/2014 Oakland bay 7/25/2014 Samish Bay 7/25/2014 Henderson Inlet 7/29/2014 Totten Inlet 7/31/2014 Reach Island 7/31/2014 Hammersley Inlet 8/1/2014 Pickering Passage 8/4/2014 Hood Canal 7 8/5/2014 Nahcotta 8/7/2014 Grays Harbor 8/13/2014 Rocky Bay 8/13/2014 Rocky Bay 8/20/2014 Hood Canal 1 8/21/2014 Eld Inlet 8/27/2014 Skookum Inlet 8/27/2014 Hood Canal 9 9/4/2014 Drayton Harbor 9/4/2014 Peale Passage 9/5/2014 Annas Bay 9/15/2014 Nisqually Reach 9/15/2014 Burley Lagoon 9/19/2014 5

6 tlh level Sporadic illness High Vibrio Level Closure Growing Area Closure Date Reopening Date Hood Canal 6 7/10/2014 8/15/2014 Hood Canal 7 7/10/2014 7/31/2014 Hood Canal 8 7/11/2014 8/22/2014 Totten Inlet 7/16/2014 7/31/2014 Hammersley Inlet 7/16/2014 8/1/2014 Hood Canal 9 7/18/2014 7/31/2014 Hood Canal 5 7/18/2014 8/1/2014 Hood Canal 4 7/18/2014 8/1/2014 Skookum Inlet 7/31/2014 8/20/2014 Dabob Bay 8/13/2014 8/28/2014 Hammersley Inlet 8/15/2014 8/28/2014 tlh level and sporadic illness Sporadic Illness Closure Growing Area Closure Date Reopening Date Oakland Bay 8/1/ /1/2014 Samish Bay 8/4/ /1/2014 Pickering Passage 8/6/ /1/2014 Totten Inlet 8/7/2014 8/14/2014 Rocky Bay 8/22/ /1/2014 Totten Inlet 8/27/ /1/2014 Eld Inlet 9/4/ /1/2014 Hood Canal 1 9/4/ /1/2014 Henderson Inlet 9/10/ /1/2014 Annas Bay 9/23/ /1/2014 6

7 Conduct monitoring from June through September and collect: Oysters for tissue samples Water, air and tissue temperature Salinity Public Health Lab evaluates the oyster samples to quantify levels of: tlh (species marker) tdh (pathogenicity marker) trh (pathogenicity marker) USB data loggers deployed at all weekly sampling sites Monitor near real-time water temperature 7

8 Growing Area Annas Bay Bay Center Dabob Bay Drayton Harbor Eld Inlet Grays Harbor Hammersley Inlet Henderson Inlet Hood Canal 2 Hood Canal 3 Hood Canal 4 Hood Canal 5 Hood Canal 6 Hood Canal 7 Hood Canal 8 Hood Canal 9 North Bay Oakland Bay Pacific Coast Pickering Passage Quilcene Bay Samish Bay Skookum Inlet Totten Inlet Site Name Gold Coast Goosepoint Rock Point Tarboo Drayton Harbor Chelsea Farms Brady's South Sound Mariculture Nisqually SeabeckBay Taylor Brinnon Beacon Point Hama Hama Gold Coast Union Sisters Point Mcdermott DeNottas Taylor Victor Taylor Chapman Cove Quinault Calm Cove Yacht Club Taylor East Wallins Taylor Oyster Bay Weekly Bi weekly Random 8

9 Dabob Bay MPN/g TLH MPN TRH MPN TDH MPN TLH Closure Level Jun 16 Jun 24 Jun 30 Jun 10 Jul 16 Jul 24 Jul 27 Jul 6 Aug 10 Aug 21 Aug 26 Aug 4 Sep 10 Sep 9

10 Dabob Bay MPN/g TLH MPN TRH MPN TDH MPN TLH Closure Level Jun 16 Jun 24 Jun 30 Jun 10 Jul 16 Jul 24 Jul 27 Jul 6 Aug 10 Aug 21 Aug 26 Aug 4 Sep 10 Sep 10

11 Clickable maps advisory Post signs News release Facebook posts Weekly results Weekly illness report Festivals 11

12 Vibrio Species Exposure Exposure Location Residence County alginolyticus fluvialis Swimming Swimming Cooked crab Oysters Unknown Case Inlet Philips Lake Indianola Beach Unknown Unknown Nontoxigenic cholera Oysters Hood Canal 1 (commercial) Grays Harbor (commercial) Pierce Mason Kitsap Skagit Pierce King Pierce Grimontia hollisae Oysters WA or BC (commercial) Out of state 12

13 DOH Food & Shellfish Microbiology Lab continued to detect V. vulnificus (Vv ) in oyster samples: Bay Center Drayton Harbor Samish Bay Quilcene Bay Present in low levels Further characterization of the isolates by FDA is ongoing Growing Area with Vv+ sample 13

14 Historically Vv has been isolated by the FDA: 1984 sediment sample from Willapa Bay 2007 oyster samples collected at the retail level (multiple growing areas) Health is not aware of any Vv-associated illnesses among people who ve eaten shellfish from our state nor among people with exposure to Washington waters 14

15 Prevent Vibrio parahaemolyticusassociated illnesses Move towards a proactive management approach Base controls on risk and environmental conditions Align Washington s Control Plan with the national requirements 15

16 Component Current Proposed Shucked meats Label with For cooking only Exempt shucked meats and post harvest processed oysters Shellfish No requirements Requirement to report production data Growing area categories Geographic area (coastal and inland) Risk level (historic illness trend) Time of harvest to Temperature control (placing oysters in temperature control) Cooling (reaching and maintaining 50⁰F) Time reduction and closure Closure period Waivers Sporadic illnesses Remainder of control plan months Based on the criteria of no illness Air temperature threshold and Harvest (water or tissue) temperature threshold in July and August 24 hours Based on providing a comparable level of public health protection 16

17 Laura Wigand Public Health Always Working for a Safer and Healthier Washington