Mosquito monitoring surveys

Since FY2011, we have been conducting regular mosquito monitoring surveys on mosquito-borne infectious diseases, including dengue fever and chikungunya fever.
From 2015, implementation locations have been added from the viewpoints of "many users", "many many tourists", and "many events are held".
With the holding of the Rugby World Cup 2019TM and the Tokyo 2020 Olympic and Paralympic Games, we expanded our research locations around both competition venues around both competition venues.
The virus has never been detected in mosquitoes investigated.

• Location: 25 parks and harbor districts in the city (19 places until 2014)
• Date of implementation: June to October (in FY2019, six locations started in May)
• Details of the survey: Mosquito habitats (types, density, etc.) and the status of viral viruses (dengue virus, etc.) that cause major mosquito-borne infections
• List of Survey Locations in FY2019 (PDF: 52KB)

Please see each page of Yokohama City Inst. of Health for an overview of mosquito habitat surveys and past virus testing results.
In addition, about Aedes albopictus, you can see test result breaking news on page of Yokohama City Inst. of Health "pagen information" page.

• Virus test results of mosquito-borne infectious diseases in Yokohama
• Testing Information Monthly Report January 2020 Issues Survey Results of Mosquitoes in Yokohama City (May to October 2019)

• Virus test results of mosquito-borne infectious diseases in Yokohama
• Test information Monthly Report January 2019 Issue Survey Results of Mosquitoes in Yokohama City (May to October 2018)

• June 1, 2017 "We call for mosquito measures by bus and subway-we do not increase mosquitoes this summer! Don't get bitten by mosquitoes!" （PDF：409KB）
• May 18, 2016 "We will strengthen the prevention and enlightenment of mosquito-borne infectious diseases" (PDF: 900KB)
• June 2, 2015 "we start monitoring investigation of mosquito in 25 places in the city!" （PDF：786KB）