Post has learned. The researcher behind the discovery has called on the government to step up surveillance of the potentially more infectious mutated strain, which is being investigated by scientists around the world. Polytechnic University’s findings show that the 10 cases with the variant – officially known as B.1.617, or by its sub-lineage B.1.617.1 – were all imported from India, with most arriving in Hong Kong early this month. Do you have questions about the biggest topics and trends from around the world? Get the answers with SCMP Knowledge, our new platform of curated content with explainers, FAQs, analyses and infographics brought to you by our award-winning team.