Regional vector surveillance centers against climate change

Regional vector surveillance centers against climate change

Regional vector surveillance centers against climate change


It is a project to provide surveillance information through monitoring real-time information on infectious disease vectors and vector-borne diseases due to climate change and environmental changes.

Operation of regional vector surveillance centers against climate change. It is a project to provide surveillance information through monitoring real-time information on infectious disease vectors and vector-borne diseases due to climate change and environmental changes.

Background

  • The recent rise in the incidence of vector-borne disease caused by wide distribution and high density of infectious disease vectors due to climate change.
  • A high possibility of introduction of infectious disease vectors and vector-borne diseases in Korea due to increasing international trade.
  • Continuous surveillance of vectors and pathogens at the surveillance centers is necessary to monitor the occurrence of vector-borne diseases and to provide prompt responses.

Overview

  • Participating Institutions: 11 Universities and 2 Institutes of Health and Environment
    Regional vector surveillance centers : 16 centers (Capital 1, Capital 2, Gyeonggi, Gangwon 1, Gangwon 2, Chungcheong 1, Chungcheong 2, Chungcheong 3, Jeonbuk, Jeonnam 1, Jeonnam 2, Gyeongbuk 1, Gyeongbuk 2, Gyeongnam 1, Gyeongnam 2, Jeju)

    • Operating system of vector surveillance center
      Operating system of vector surveillance center
    • Establishment of regional vector surveillance center Establishment of regional vector surveillance center


  • Business contents: Investigate the distribution and density of the vectors, and confirm the pathogen infection of the vectors.

    • National distribution survey for three years
      National distribution survey for three years
    • Monthly surveillance of mosquitoes density causing Japanese encephalitis
      Monthly surveillance of mosquitoes density causing Japanese encephalitis


    • Confirmation of pathogens from mosquitoes by real-time PCR
      Confirmation of pathogens from mosquitoes by real-time PCR
    • Confirmation of scrub typhus by PCR
      Confirmation of scrub typhus by PCR


  • Vectors and Pathogens

    • mosquito
      mosquito
    • mite
      mite
    • tick
      tick

    • Main arthropod vectors of medical importance are mosquitoes, mites, and ticks.
    • The following pathogens (viruses and bacteria) transmitted by the vectors give rise to public health concerns: Japanese encephalitis virus (JEV), Dengue fever virus (DNV), West Nile virus (WNV), yellow fever virus (YFV), Zika virus, severe fever with thrombocytopenia syndrome virus (SFTS) virus, and Orientia tsutsugamushi.

  • Surveillance period
    • The national monitoring periods for investigating the density and prevalence of the major vectors are from March to November. However, depending on the vectors' biological activities, sampling period and frequency are different; mosquitoes are collected twice a month all year around, mites once a week from September to November, and ticks are overseen once a month from April and November.
    • A national survey of the distribution of the vectors has been also conducting at three-year intervals, in consecutive order of ticks to mites, to mosquitoes (tick->mite->mosquito).