OSAKA, Japan, September 18, 2023 Shionogi & Co., Ltd. (Head Office: Osaka, Japan; Chief Executive Officer: Isao Teshirogi, Ph.D.; hereafter "Shionogi") will present two late-breaking posters at the European Scientific Working Group on Influenza and other Respiratory Viruses’ (ESWI), 9th Influenza Conference, highlighting data suggesting the potential of its investigational oral antiviral ensitrelvir on symptoms associated with long COVID and in high-risk COVID-19 hospitalized patients with sign