All genome analysis results of COVID-19 at Yokohama City Inst. of Health

An analysis of 19 samples collected in February and March 2024 revealed nearly 70% of the BA.2 strains containing JN.1 strain, the world's mainstream strain.
In addition, XDQ system, which is a recombinant of BA.2.86.1 and FL.15.1.1, was detected for the first time in Yokohama City.
In addition, the XDQ system has already been detected in other municipalities.

COVID-19 infection surveillance Bulletin / Weekly Report: Please see the National Institute of Infectious Diseases website (external site) for information on outbreak trends.
Please refer to the Tokyo Metropolitan Health and Safety Research Center (external site) for the status of COVID-19 mutant strains around the world.

• Analysis results up to February 15, 2024 (PDF: 108KB)(Published on R6.2.15)
• Analysis results up to January 25, 2024 (PDF: 106KB)(Posted on R6.1.30)
• Analysis results up to November 9, 2023 (PDF: 122KB)(Posted on R5.11.17)
• Analysis results up to October 12, 2023 (PDF: 118KB)(Posted in R5.10.18)
• Analysis results up to October 5, 2023 (PDF: 151KB)(published in R5.10.12)
• Analysis results up to October 2, 2023 (PDF: 122KB)(Published on R5.10.5)
• Analysis results up to September 15, 2023 (PDF: 130KB)(Posted on R5.9.22)
• Analysis results up to August 24, 2023 (PDF: 126KB)(Posted on R5.8.31)
• Analysis results up to August 21, 2023 (PDF: 134KB)(Posted on R5.8.28)
• Analysis results up to August 16, 2023 (PDF: 136KB)(Posted on R5.8.22)
• Analysis results up to August 10, 2023 (PDF: 122KB)(Posted on R5.8.16)
• Analysis results up to August 1, 2023 (PDF: 127KB)(Posted in R5.8.4)
• Analysis results up to July 25, 2023 (PDF: 119KB)(Posted on R5.7.28)
• Analysis results up to June 27, 2023 (PDF: 51KB)(Published on R5.7.3)
• Analysis results up to June 20, 2023 (PDF: 45KB)(Posted on R5.6.27)
• Analysis Results of analysis up to June 12, 2023 (PDF: 54KB)(Posted on R5.6.13)
• Analysis results up to April 18, 2023 (PDF: 76KB)(Posted on R5.4.21)
• Analysis results up to March 17, 2023 (PDF: 55KB)(published on R5.3.23)
• Analysis results up to March 2, 2023 (PDF: 55KB)(published on R5.3.6)
• Analysis results up to February 15, 2023 (PDF: 47KB)(Published on R5.2.20)
• Analysis results up to January 25, 2023 (PDF: 47KB)(Published on R5.2.1)
• Analysis results up to January 17, 2023 (PDF: 49KB)(Posted on R5.1.23)
• Analysis results up to January 11, 2023 (PDF: 47KB)(Posted on R5.1.16)
• Analysis results of analysis up to December 23, 2022 (PDF: 46KB)(Posted on R4.12.28)
• Analysis Results of analysis up to December 14, 2022 (PDF: 49KB)(Posted on R4.12.20)
• Analysis results up to December 8, 2022 (PDF: 48KB)(Posted in R4.12.14)
• Analysis results up to November 24, 2022 (PDF: 47KB)(Posted on R4.11.28)
• Analysis results up to October 24, 2022 (PDF: 42KB)(Posted in R4.11.1)
• Analysis results up to September 22, 2022 (PDF: 43KB)(Posted on R4.9.29)
• Analysis results up to August 31, 2022 (PDF: 36KB)(Posted in R4.9.2)
• Analysis results up to August 22, 2022 (PDF: 56KB)(Posted on R4.8.26)
• Analysis results up to August 17, 2022 (PDF: 43KB)(Posted on R4.8.17)
• Analysis results up to August 4, 2022 (PDF: 37KB)(Posted on R4.8.5)
• Analysis results up to July 29, 2022 (PDF: 36KB)(Published on R4.7.29)
• Analysis results up to July 19, 2022 (PDF: 37KB)(Published on R4.7.19)
• Analysis results up to June 16, 2022 (PDF: 83KB)(Posted on R4.6.21)
• Analysis results up to May 31, 2022 (PDF: 108KB)(published on R4.6.9)
• Analysis results up to April 30, 2022 (PDF: 98KB)(Posted on R4.5.16)