Four months after recovering from Covid-19, Mable Wong still feels anxious and has difficulty falling asleep at night.The freelance translator in her 30s is awake until 2am or 3am most nights, her mind churning with memories of staying in hospital for almost a month, and the fear that she might fall ill again.She returned to Hong Kong in March from a cultural exchange trip to Europe and had to spend two weeks at home in self-quarantine. Single and living with her parents, she began feeling sickā€¦