title: The spread of pandemic H1N1 2009 by age and region and the comparison among monitoring tools.
abstract: This report describes the pattern of the spread of the pandemic H1N1 2009 and compares 3 monitoring tools until the 57th week or January 31, 2010. The 1st week was from December 28th, 2008 to January 3rd, 2009. A total of 740,835 patients were reported to be infected with pandemic H1N1 2009 and 225 patients were reported to have died of pandemic H1N1 2009. The number of patients aged from 7 to 12 was the largest (183,363 patients in total) but the virus spread and then was suppressed most quickly among the children between 13 and 18. The region-determinant incidence of patients showed diverse patterns according to regions. The peak of the ILI per thousand was at the 45th week, the number of antiviral prescriptions reached its peak at the 44th week, and the peak based on reported patients was the 46th week. As of February 3 2010, the outbreak passed through the peak and has gradually subsided. Now it is time for the government and the academic world to review this outbreak, efficacy of vaccination, and further preparation and response for the next pandemic.
authors.affiliation: Korea Centers for Disease Control and Prevention, Seoul, Korea.
authors.forename: Joon Hyung
authors.initials: JH
authors.lastname: Kim
authors.forename: Hyo-Soon
authors.initials: HS
authors.lastname: Yoo
authors.forename: Joo-Sun
authors.initials: JS
authors.lastname: Lee
authors.forename: Eun Gyu
authors.initials: EG
authors.lastname: Lee
authors.forename: Hye-Kyung
authors.initials: HK
authors.lastname: Park
authors.forename: Yeon Hee
authors.initials: YH
authors.lastname: Sung
authors.forename: SeongSun
authors.initials: S
authors.lastname: Kim
authors.forename: Hyun Su
authors.initials: HS
authors.lastname: Kim
authors.forename: Soo Youn
authors.initials: SY
authors.lastname: Shin
authors.forename: Jong-Koo
authors.initials: JK
authors.lastname: Lee
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000998:Antiviral Agents / Q000627:therapeutic use; D002648:Child; D002675:Child, Preschool; D004196:Disease Outbreaks; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D053118:Influenza A Virus, H1N1 Subtype / Q000472:pathogenicity*; D007252:Influenza Vaccines / Q000627:therapeutic use; D007251:Influenza, Human / Q000188:drug therapy / Q000453:epidemiology* / Q000401:mortality; D007723:Korea / Q000453:epidemiology; D008875:Middle Aged; D018571:Sentinel Surveillance; D055815:Young Adult
chemical_list: D000998:Antiviral Agents; D007252:Influenza Vaccines