A COVID-positive high school student in Brisbane has the same virus strain as two travellers in hotel quarantine but the link between the groups is unclear, health authorities say. Queensland recorded nine new local COVID-19 cases on Saturday as the state’s southeast bunkers down under a three-day lockdown. Deputy Premier Steven Miles said on Sunday all nine cases uncovered were connected to the Indooroopilly cluster. It was the highest number of daily infections in almost 12 months. The Indooroopilly cluster now numbers at least 18 people and Miles implored more Queenslanders to seek virus testing, with fewer than 12,000 tests conducted on Saturday. Authorities hope to see at least 40,000 daily tests. Chief health officer Jeannette Young said there was no clear link yet between a Indooroopilly High School student who caught the virus and two people in hotel quarantine in Brisbane. One of the people was from Indonesia and …