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Faster coronavirus test submitted for approval in Japan

Apr 28, 2020 (Nikkei) - A unit of Japanese medical diagnostics company Miraca Holdings has applied for government approval of a coronavirus testing kit that can produce results much faster than current mainstay tests.

Tokyo-based Fujirebio filed the application for the antigen test on Monday, according to the Ministry of Health, Labor and Welfare.

The ministry will work quickly to determine its effectiveness, a ministry representative said.

Japan mainly uses polymerase chain reaction, or PCR, tests to screen for the virus that causes COVID-19. This can take hours. Antigen tests can produce results in less than an hour, though critics say they are less accurate.

Antigen tests detect proteins unique to a virus. Antibody tests, on the other hand, look for antibodies produced by the immune system to combat the virus. While these can be conducted quickly as well, patients in their early stages tend not to have enough antibodies.

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Two typhoons moving across the Pacific southeast of Japan are expected to remain well away from the Japanese mainland, but powerful swells could bring rough seas to a wide stretch of the country's Pacific coastline throughout the three-day holiday weekend, according to forecasts updated at 3 a.m. on October 10.

A series of cyberattacks has disrupted business operations and exposed millions of customer records across Japan, with a ransomware attack on a cloud service provider affecting 495 companies and local governments nationwide, while convenience store operator Lawson has disclosed a separate breach involving more than 2.15 million personal information records.

Japan's first 360-degree projection mapping show will open at the Osaka City Museum of Fine Arts on October 10, transforming the historic building into an immersive world of light, music, and seasonal imagery, with organizers hoping the attraction will also help stimulate the city's nighttime economy.

Tokyo University of Science professor emeritus Kenzo Soai has been awarded this year's Nobel Prize in Chemistry together with French chemist Henri B. Kagan for discoveries that transformed scientists' understanding of how chemical reactions can favor one of two mirror-image forms of a molecule.

The US military suspended activities by all forces stationed in Okinawa for 48 hours from noon on October 7, an unusual measure following the arrest of a US Marine in connection with a robbery and murder case that has renewed scrutiny of crimes involving American service members.

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Police in Oita Prefecture have revealed that the Kanto region accounts for the largest number of reported sightings of Yoichi Hatta, a fugitive wanted in connection with a fatal hit-and-run incident in Beppu in 2022, with authorities preparing to distribute new wanted posters nationwide from November as the search enters its fifth year.

A former dog breeder accused of failing to provide veterinary treatment to injured dogs at a facility in Neyagawa, Osaka Prefecture, pleaded not guilty as her trial opened on October 7, saying she had raised the animals with affection.

Twin brothers have been arrested on suspicion of stealing copper roofing from a remote shrine in Kochi Prefecture, as police investigate a series of similar thefts reported at about 10 shrines across the prefecture since around September 2025.

New Year postcards for 2027 arrived at post offices across Hokkaido on October 6, with designs featuring sheep for the upcoming Year of the Sheep as Japan's traditional New Year card market continues to shrink.

The Tokyo District Court on October 6 fined television personality Dewi Sukarno, widely known in Japan as Dewi Fujin, 200,000 yen after finding the 86-year-old guilty of assaulting two women who worked for her agency, including a former manager.

A 20-year-old US Marine arrested over the robbery and killing of a woman at a hotel in Naha, Okinawa Prefecture, may have strangled her with the cord of a telephone installed in the room, investigators said.

Five boys aged 15 to 17 have been arrested on suspicion of robbing and confining a 17-year-old high school student in Akishima, Tokyo, after allegedly beating him with a baton, taking his cash and forcing him to travel around on motorcycles.

A 36-year-old Tokyo bar owner was arrested on October 5 on suspicion of abandoning the body of his 25-year-old girlfriend in a mountainous area of Miyagi Prefecture, with police also investigating whether he was involved in her death.