SHANGHAI, July 24, 2026 /PRNewswire/ — Shanghai Ark Biopharmaceutical Co., Ltd. ("ArkBio") today announced that all cohorts of healthy volunteers have been dosed in an Australian Phase I trial with AK0406, a novel long-acting antiviral-Fc conjugate (AFC) drug for influenza prophylaxis. The clinical trial has now entered the follow?up phase. AK0406 is a novel long-acting antiviral agent developed by ArkBio. By precisely conjugating highly potent antiviral drugs to an antibody Fc fragment, AK0406 is designed to provide sustained pre- and post-exposure prophylaxis and potential therapeutic benefits to public population, addressing the unmet needs for influenza prevention. Preclinical data show that…