The Olympics host city Tokyo, as well as Thailand and Malaysia, announced record Covid-19 infections on July 31, mostly driven by the highly transmissible Delta variant of the disease.

China’s Sinovac Biotech defended the safety and efficacy of the company’s experimental Covid-19 vaccine, after researchers in Brazil released late-stage clinical data showing efficacy that was much lower than initially announced.

China’s National Health Commission stated today that the coronavirus has infected 5,974 individuals, resulting in 132 deaths and 103 people being cured.