@Potkettlexx yes there was definitely global panic over swine flu. Ultimately when it was over, with all of the estimated mild cases taken into account, the fatality rate was much lower than coranavirus' appears to be at the moment.
Although the WHOs report out of China, worryingly, indicates that there may not be a vast amount of missed, mild, or asymptomatic cases that would dilute the fatality rate in the same way.
What is the most concerning with this coronavirus is the high rate of people needing medical intervention to survive - respiratory failure, septic shock and organ failure....the NHS simply will not be able to save the vast majority of these cases if when this thing takes hold.