2022-06-26-世界卫生组织-Cumulative_number_of_confirmed_human_cases_for_avian_influenza_A_H5N1_reported_to_WHO,_2003-2022,_27_June_2022_4页_78kb

Summary of Cumulative Confirmed Human Cases for Avian Influenza A(H5N1) Reported to WHO, 2003-2022

Core Content

This document presents the cumulative number of confirmed human cases and deaths due to avian influenza A(H5N1) reported to the World Health Organization (WHO) from 2003 to 2022. The data is categorized by country and time periods, with the total cases and deaths for each period provided. It is important to note that the total number of cases includes the number of deaths, and WHO only reports laboratory-confirmed cases.

Main Points

• Data Coverage: The data spans from 2003 to 2022, with breakdowns for the periods 2003-2009, 2010-2014, 2015-2019, and 2020-2022.
• Reporting Criteria: Only laboratory-confirmed cases are reported by WHO.
• Onset of Illness: All dates referenced in the data correspond to the onset of illness.
• Country-Specific Trends:
  • Viet Nam had the highest number of cases and deaths throughout the period.
  • Indonesia also reported a significant number of cases and deaths, especially in the early years.
  • China had a consistent number of cases and deaths over the years.
  • Egypt showed a steady increase in cases and deaths, particularly in the 2003-2009 and 2010-2014 periods.
  • Azerbaijan and Bangladesh had fewer cases and deaths, with notable spikes in the early years.
  • Thailand and Turkey had relatively low numbers of cases and deaths compared to other countries.
  • Nepal, Nigeria, and Myanmar reported only a few cases and deaths, with some cases in later years.
• Total Cases and Deaths:
  • 2003-2009: 468 cases, 282 deaths
  • 2010-2014: 233 cases, 125 deaths
  • 2015-2019: 160 cases, 48 deaths
  • 2020: 1 case, 0 deaths
  • 2021: 2 cases, 1 death
  • 2022: 1 case, 0 deaths
  • Overall Total (2003-2022): 865 cases, 456 deaths

Key Information

• The total number of confirmed human cases and deaths is cumulative, meaning it includes all reported cases up to the end of the specified periods.
• The highest number of cases and deaths was recorded in Viet Nam (127 cases, 64 deaths) during the 2003-2022 period.
• Indonesia had the highest number of cases in the 2003-2009 period (162 cases, 134 deaths).
• China had the highest number of deaths in the 2003-2009 period (25 deaths).
• Egypt had a high number of deaths in the 2003-2009 period (27 deaths), and the number of deaths continued to be significant in later periods.
• Azerbaijan had the highest case fatality rate in the 2003-2009 period (62.5%).
• The number of reported cases and deaths declined significantly from 2015 onwards, with only a few cases in 2020-2022.

Additional Notes

• The data is sourced from WHO/GIP and is current as of 27 June 2022.
• The breakdown by year is available in subsequent tables for the periods 2003-2009, 2010-2014, and 2015-2019.
• The document does not provide detailed information on the geographic distribution or specific outbreaks within the reported time frames.