The Philippines will be the first country in the world to begin large-scale human testing of Russia’s coronavirus vaccine in October. President Rodrigo Duterte is expected to be inoculated as early as May next year. Duterte had offered himself as a guinea pig for the first jab, saying he had “huge trust” in the vaccine. But his spokesman Harry Roque confirmed he will not receive the inoculation until regulators guarantee its safety. There is growing scepticism about the effectiveness of the fast-tracked vaccine. Phase 3 clinical trials in the Philippines are due to run from October to March 2021. Roque said the president was scheduled to receive the vaccine no earlier than May 1. Roque said Philippine experts will review next month the results of Russia’s Phase 1 and 2 clinical trials before the Southeast Asia country starts its Phase 3 testing. “We will do it simultaneously with Russia,” Roque said. On Tuesday Russia became the first country to grant regulatory approval for a Covid-19 vaccine, to be named “Sputnik V” in homage to the Soviet Union’s launch of the world’s first satellite.