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China-based Joysbio (Tianjin) Biotechnology Co., Ltd. has developed a rapid test to diagnose the latest SARS-CoV-2 omicron subvariants BA.4 and BA.5. The Joysbio Coronavirus Antigen Rapid Test Kit, suitable for self-testing and requiring no professional support, can effectively detect these subvariants and has been certified by the Polish Centre for…