Template:2009 US swine flu outbreak table

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Case Reporting in the United States

Case Classification

The CDC has defined three classifications for investigations of Swine-Origin Influenza A H1N1 Cases (S-OIV).[1]

  • Confirmed: a person with an acute febrile respiratory illness with laboratory confirmed S-OIV infection by one or more of the following tests:
    • real-time RT-PCR
    • viral culture
  • Probable: a person with an acute febrile respiratory illness who is positive for influenza A, but negative for H1 and H3 by influenza RT-PCR
  • Suspected: a person with acute febrile respiratory illness with onset
    • within 7 days of close contact with a person who is a confirmed case of S-OIV infection, or
    • within 7 days of travel to community either within the United States or internationally where there are one or more confirmed cases of S-OIV infection, or
    • resides in a community where there are one or more confirmed cases of S-OIV infection.

Daily Reporting

The CDC releases a daily update on confirmed cases by state at 11:00 am ET. Many state departments of health release updates on confirmed and probable cases throughout the day. Several states have developed dedicated websites for information on the flu outbreak. Others release numbers on their department of health website or though daily press reports.

All U.S. States and Puerto Rico have received testing kits and training from the CDC that permits them to do local confirmation of samples. Previously all samples had to be sent to CDC headquarters in Atlanta, causing considerable delay in reporting.

The numbers from state authorities are often out of synch with those in the CDC daily report, primarily because the CDC updates its figures less frequently. For instance, the Illinois Department of Public Health updated the number of confirmed cases in Illinois to 225 at 10 a.m. CT on May 6, 2009,[49] while the CDC update at 11:00 AM ET that day showed only 122 confirmed cases in Illinois.[2] The CDC report also currently lists one trans-state case. A Kentucky woman who had returned home from Mexico later traveled to Georgia where she was diagnosed and treated for swine flu. Both Georgia and Kentucky record the case on their websites; the CDC notes the case for Kentucky.

Some states, including Michigan, Massachusetts, Tennessee, have stopped reporting probable numbers since receiving their CDC testing kits. Others, such as Texas, never regularly reported probable cases. Template:Templaterefsection

  1. 1.0 1.1 1.2 "Interim Guidance on Case Definitions to be Used For Investigations of Swine-Origin Influenza A (H1N1) Cases*". Centers for Disease Control and Prevention. 2009-04-30. Retrieved 2009-05-01.
  2. 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 2.11 2.12 2.13 2.14 2.15 2.16 2.17 2.18 2.19 2.20 "CDC H1N1 Flu Update: U.S. Human Cases of H1N1 Flu Infection". H1N1 Flu. Centers for Disease Control and Prevention. 2009-05-12 (11:00 EDT). Retrieved 2009-05-12. Check date values in: |date= (help) Cite error: Invalid <ref> tag; name "CDC-Confirmed" defined multiple times with different content
  3. "Swine Influenza Updates". Alabama Department of Public Health. 2009-05-08 (UTC 15:30). Retrieved 2009-05-08. Check date values in: |date= (help)
  4. "Probable case of H1N1 (swine) flu detected on ship in Alaska waters". State of Alaska. 2009-05-10. Retrieved 2009-05-10.
  5. http://www.azdhs.gov/flu/h1n1/pdfs/newH1N1_dailyreport.pdf
  6. "Health Department Announces First H1N1 Influenza A Virus (Swine Flu) Cases in Arkansas". Arkansas Department of Health. 2009-05-08. Retrieved 2009-05-11.
  7. 7.0 7.1 "Swine Flu (H1N1) Outbreak:". California Department of Public Health. 2007-05-08. Retrieved 2009-05-11.
  8. http://www.cdphe.state.co.us/COCaseSummary.pdf
  9. 9.0 9.1 Department of Information Technology. "CTFLUWATCH: Governor Rell: 11 More Cases of H1N1 Confirmed". Ct.gov. Retrieved 2009-05-12.
  10. "DHSS Press Release". Delaware Health and Social Services. 2009-05-05. Retrieved 2009-05-05.
  11. 11.0 11.1 "H1N1MediaRelease5-11-09" (Word). Florida Department of Health. 2009-05-12. Retrieved 2009-05-12.
  12. 12.0 12.1 http://health.state.ga.us/h1n1flu/doc/WEB%20H1N1_Georgia.xls
  13. 13.0 13.1 13.2 "H1N1 Influenza (swine influenza) Surveillance Findings by County, Idaho as of Thursday, May 7, 2009 (2:30pm MDT):". Idaho Department of Health & Welfare. 2009-05-07 (UTC 20:30). Retrieved 2009-05-07. Check date values in: |date= (help)
  14. 14.0 14.1 "Illinois Department of Public Health Swine Flu Statistics". Illinois Department of Public Health. 2009-05-11 (UTC 15:00). Retrieved 2009-05-11. Check date values in: |date= (help)
  15. Callahan, Rick. "Flu cases close 2 Indianapolis schools". News-sentinel.com. Retrieved 2009-05-03.
  16. 16.0 16.1 "Novel Influenza A (H1N1) Update" (PDF). Iowa Department of Public Health. 2009-05-11 (UTC 17:00). Retrieved 2009-05-11. Check date values in: |date= (help)
  17. http://www.kdheks.gov/H1N1/index.htm
  18. "DHH Emergency News". Dhh.louisiana.gov. 2006-05-17. Retrieved 2009-05-12.
  19. 19.0 19.1 "Maine H1N1 Influenza ("Swine Flu") Update". Maine Center for Disease Control and Prevention (Department of Health and Human Serivces). 2009-05-07 (UTC 20:00). Retrieved 2009-05-07. Check date values in: |date= (help)
  20. "H1N1 Maryland Case Update". Maryland Department of Health and Mental Hygiene. 2009-05-07 (UTC 20:11). Retrieved 2009-05-07. Check date values in: |date= (help)
  21. http://www.mass.gov/Eeohhs2/docs/dph/cdc/flu/swine_flu_confirmed_case_count.rtf
  22. "MDCH - Influenza A (H1N1)". Michigan.gov. Retrieved 2009-05-11.
  23. "H1N1 Novel Influenza -Minnesota Dept. of Health". Minnesota Department of Health. 2009-05-12 (UTC 14:00). Retrieved 2009-05-12. Check date values in: |date= (help)
  24. "Latest Swine Influenza Information". Missouri Department of Health and Senior Services. 2009-05-08. Retrieved 2009-05-08.
  25. "Department of Public Health & Human Services - Swine Flu". Dphhs.mt.gov. Retrieved 2009-05-12.
  26. 26.0 26.1 "Nebraska DHHS: H1N1 Influenza: Human Cases in Nebraska". Nebraska Department of Health and Human Services. 2009-05-11. Retrieved 2009-05-11.
  27. "Nevada State Health Division Influenza Surveillance Report" (PDF). Nevada State Health Division. 2009-05-08. Retrieved 2009-05-08.
  28. "Wednesday, May 6, 2009 H1N1 Update". New Hampshire Department of Health and Human Services. 2009-05-06. Retrieved 2009-05-07.
  29. "New Jersey has no new H1N1 Flu Cases". Department of Health and Senior Services (New Jersey). 2009-05-06. Retrieved 2009-05-07.
  30. 30.0 30.1 "H1N1 Influenza Resources". New Mexico Department of Health. 2009-05-11. Retrieved 2009-05-11.
  31. "H1N1 Flu (Swine Flu)". Health.state.ny.us. 2007-07-26. Retrieved 2009-05-12.
  32. "NCPH: Influenza in N.C." North Carolina Public Health. 2009-05-11. Retrieved 2009-05-11.
  33. 33.0 33.1 "H1N1 Influenza Virus also called Swine Flu". North Dakota Department of Health. 2009-05-11. Retrieved 2009-05-11.
  34. 34.0 34.1 34.2 "Swine flu". Ohio Department of Health. 2009-05-08. Retrieved 2009-05-08.
  35. "Oklahoma State Department of Health - New H1N1 Influenza Cases Announced". Ok.gov. Retrieved 2009-05-12.
  36. "AH1N1 Flu Investigation". Oregon Department of Health Services. 2009-05-08. Retrieved 2009-05-08.
  37. 37.0 37.1 "Health: Swine Influenza (H1N1)". Pennsylvania Department of Health. 2009-05-10. Retrieved 2009-05-10.
  38. "Salud investiga dos nuevos casos probables de Influenza A (Health Department investigates two new probable cases of Influenza A)" (PDF) (in Spanish). Departamento de Salud (Puerto Rico Department of Health). 2009-05-05. Retrieved 2009-05-06.
  39. "Rhode Island Department of Health Swine Flu". Rhode Island Department of Health. 2009-05-05. Retrieved 2009-05-06.
  40. "Influenza A H1N1 (Swine)-S.C. Flu Numbers". South Carolina Department of Health and Environmental Control. 2009-05-08. Retrieved 2009-05-08.
  41. "SOUTH DAKOTA DEPARTMENT OF HEALTH MEDIA ADVISORY". state.sd.us. 2009-05-06. Retrieved 2009-05-06.
  42. "Texas Department of State Health Services, News Updates". Texas Department of State Health Services. 2009-05-11. Retrieved 2009-05-11.
  43. 43.0 43.1 "Utah Public Health Situation Report" (PDF). Bureau of Epidemiology (Utah Department of Health). 2009-05-08. Retrieved 2009-05-08.
  44. "Confirmed Influenza A (H1N1) Case Counts". Vdh.state.va.us. Retrieved 2009-05-10.
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  46. 46.0 46.1 Enter your Company or Top-Level Office. "District of Columbia H1N1 Influenza Update - Releases - Department of Health". Newsroom.dc.gov. Retrieved 2009-05-12.
  47. Gregory, Kathryn (2009-05-01). "Potential swine flu case in Northern Panhandle". The Charleston Gazette. Retrieved 2009-05-01.
  48. 48.0 48.1 "Pandemic Information for Wisconsin". Pandemic.wisconsin.gov. 2009-05-08. Retrieved 2009-05-08.
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