Coronavirus: Hong Kong may consider adding tracking function on ‘Leave Home Safe’ app to boost contact tracing, health chief says

• Health chief Sophia Chan says government will review how to improve contact tracing, but pressing priority is to track those affected by recent chains of infections
• City may also have to resort to home quarantine if places at isolation facilities run out, she adds, as experts warn new wave of Omicron infections could turn into ‘tsunami’