Hong Kong might have grown accustomed to treating seasonal influenza as a temporary inconvenience rather than a public health menace as the virus comes and goes every year. But with a lower vaccination uptake and a raging and longer-than-expected summer outbreak this year, the same business-as-usual response is hardly the right defence. Members of the public, especially high-risk groups, should waste no time coming forward for the jabs as local health authorities put the city on alert. Officials...