Can this pandemic happen again? Will we have to go on lockdown/quarantine again?

Unfortunately it is not possible to predict whether or not a similar pandemic will occur in the future. Every infectious agent is unique and presents unique challenges for policy makers, healthcare workers, and individuals across the board. Decisions to enact measures such as a lockdown or quarantine are based on multiple factors including anticipated effects on population health, economic activity, and civil liberties. As this current pandemic plays out and eventually resolves, the lessons learned at both the local and international level will better inform the processes and guidelines that will be used to respond to a new pandemic if it were to occur in the future.