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Japan Institute for Health Security
Infectious Desease Information
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IASR Graphs Virus

Published: 24 February 2012

Influenza virus

By week and season

2021/21-2025/25

  • PDF(Link to External Site.)(PDF:15KB)
  • CSV(Link to External Site.)(CSV:8KB)

By prefecture

2025/25

  • PDF(Link to External Site.)(PDF:8.6KB)
  • CSV(Link to External Site.)(CSV:2KB)

By week(AH1 includes AH1pdm09)

2024/24&2025/25

  • PDF(Link to External Site.)(PDF:8.6KB)
  • CSV(Link to External Site.)(CSV:2KB)

Current & preceding 4 seasons

2021/21-2025/25

  • PDF(Link to External Site.)(PDF:9.8KB)
  • CSV(Link to External Site.)(CSV:4KB)

By prefecture and week

2025/25 AH1pdm09

  • PDF(Link to External Site.)(PDF:1,095KB)
  • CSV(Link to External Site.)(CSV:8KB)

2025/25 A(H1)

  • PDF(Link to External Site.)(PDF:948KB)
  • CSV(Link to External Site.)(CSV:1KB)

2025/25 A(H3)

  • PDF(Link to External Site.)(PDF:972KB)
  • CSV(Link to External Site.)(CSV:4KB)

2025/25 B (Total)

  • PDF(Link to External Site.)(PDF:957KB)
  • CSV(Link to External Site.)(CSV:3KB)

2025/25 B (Victoria lineage)

  • PDF(Link to External Site.)(PDF:957KB)
  • CSV(Link to External Site.)(CSV:3KB)

2025/25 B (Yamagata lineage)

  • PDF(Link to External Site.)(PDF:948KB)
  • CSV(Link to External Site.)(CSV:1KB)

Norovirus, Sapovirus & Rotavirus

By week

Norovirus, Sapovirus 2021/21-2025/25

  • PDF(Link to External Site.)(PDF:8.6KB)
  • CSV(Link to External Site.)(CSV:2KB)

Rotavirus 2021/21-2025/25

  • PDF(Link to External Site.)(PDF:7.8KB)
  • CSV(Link to External Site.)(CSV:2KB)

By prefecture

2025/25

  • PDF(Link to External Site.)(PDF:367KB)
  • CSV(Link to External Site.)(CSV:1KB)

Current & preceding seasons

2024/24&2025/25

  • PDF(Link to External Site.)(PDF:8KB)
  • CSV(Link to External Site.)(CSV:2KB)

By season

2021/21-2025/25

  • PDF(Link to External Site.)(PDF:13.9KB)
  • CSV(Link to External Site.)(CSV:3KB)

Detail

Noroviris, Sapovirus 2021/21-2025/25

  • PDF(Link to External Site.)(PDF:15.1KB)
  • CSV(Link to External Site.)(CSV:7KB)

Rotavirus 2021/21-2025/25

  • PDF(Link to External Site.)(PDF:11.6KB)
  • CSV(Link to External Site.)(CSV:5KB)

By prefecture & week

Norovirus 2025/25

  • PDF(Link to External Site.)(PDF:970KB)
  • CSV(Link to External Site.)(CSV:3KB)

Foodborne gastroenteritis outbreak

By week

2024&2025

  • PDF(Link to External Site.)(PDF:11KB)
  • CSV(Link to External Site.)(CSV:12KB)

Enterovirus

Aseptic meningitis pathogens

By week 2021-2025

  • PDF(Link to External Site.)(PDF:12.8KB)
  • CSV(Link to External Site.)(CSV:9KB)

By prefecture 2025

  • PDF(Link to External Site.)(PDF:54.7KB)
  • CSV(Link to External Site.)(CSV:1KB)

By year 2021-2025

  • PDF(Link to External Site.)(PDF:6.9KB)
  • CSV(Link to External Site.)(CSV:1KB)

EV71&CA16

By week 2021-2025

  • PDF(Link to External Site.)(PDF:12.3KB)
  • CSV(Link to External Site.)(CSV:3KB)

Past 4 years 2021-2025

  • PDF(Link to External Site.)(PDF:8.9KB)
  • CSV(Link to External Site.)(CSV:3KB)

EV71 By prefecture 2025

  • PDF(Link to External Site.)(PDF:104KB)
  • CSV(Link to External Site.)(CSV:1KB)

CA16 By prefecture 2025

  • PDF(Link to External Site.)(PDF:104KB)
  • CSV(Link to External Site.)(CSV:1KB)

EV71 By diagnosis and prefecture 2025

  • PDF(Link to External Site.)(PDF:253KB)
  • CSV(Link to External Site.)(CSV:1KB)

CA16 By diagnosis and prefecture 2025

  • PDF(Link to External Site.)(PDF:253KB)
  • CSV(Link to External Site.)(CSV:1KB)

Hand, foot and mouth disease pathogens

By week 2024&2025

  • PDF(Link to External Site.)(PDF:10.5KB)
  • CSV(Link to External Site.)(CSV:5KB)

By week 2021-2025

  • PDF(Link to External Site.)(PDF:14.7KB)
  • CSV(Link to External Site.)(CSV:8KB)

By prefecture 2025

  • PDF(Link to External Site.)(PDF:500KB)
  • CSV(Link to External Site.)(CSV:1KB)

By prefecture 2025(EV71&CA16)

  • PDF(Link to External Site.)(PDF:104KB)
  • CSV(Link to External Site.)(CSV:1KB)

By year 2021-2025

  • PDF(Link to External Site.)(PDF:6.4KB)
  • CSV(Link to External Site.)(CSV:1KB)

Herpangina pathogens

By week 2021-2025

  • PDF(Link to External Site.)(PDF:13.7KB)
  • CSV(Link to External Site.)(CSV:7KB)

By year 2021-2025

  • PDF(Link to External Site.)(PDF:6.2KB)
  • CSV(Link to External Site.)(CSV:1KB)

Adenovirus

By month

2021-2025

  • PDF(Link to External Site.)(PDF:20.4KB)
  • CSV(Link to External Site.)(CSV:4KB)

Pharyngoconjunctival fever pathogens

By week 2021-2025

  • PDF(Link to External Site.)(PDF:13.7KB)
  • CSV(Link to External Site.)(CSV:9KB)

By prefecture 2025

  • PDF(Link to External Site.)(PDF:5.2KB)
  • CSV(Link to External Site.)(CSV:1KB)

By year 2021-2025

  • PDF(Link to External Site.)(PDF:6.8KB)
  • CSV(Link to External Site.)(CSV:1KB)

Epidemic keratoconjunctivitis pathogens

By week 2021-2025

  • PDF(Link to External Site.)(PDF:12.9KB)
  • CSV(Link to External Site.)(CSV:7KB)

By year 2021-2025

  • PDF(Link to External Site.)(PDF:6.8KB)
  • CSV(Link to External Site.)(CSV:1KB)

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