Laxity continues to prevail in many parts of the world as a resurgence in Covid-19 infections is threatening to undo months of painful efforts to keep the treacherous virus at bay. Thankfully, Hong Kong is still far from the lockdowns being imposed across Europe. But the latest outbreak following a series of relaxed restrictions shows vigilance must not be taken for granted. A feared wider spread in the wake of the Halloween party weekend is hardly scaremongering. As reported by the South China Morning Post , many revellers disregarded social-distancing rules, while others opted for hiking, staycation and other crowd-gathering activities. It would not be surprising if more cases of unknown origin follow. The earlier Chung Yeung Festival long weekend saw at least three staycation-related cases at the Seaview Holiday Resort in Silvermine Bay. A 15-year-old boy who attended a family gathering with a relative who stayed at the Lantau hotel also came down with the virus. There were also news reports of party rooms for Halloween gatherings flouting health restrictions. Describing the non-compliance as “very worrying”, the health minister said the government would not rule out tightening restrictions again, and rightly so. Ten months into the world’s gravest pandemic in a century, people are understandably eager to restore their way of life. Authorities around the world are under enormous pressure to relax restrictions as soon as the situation has stabilised. Hong Kong is no exception, having fought hard to curb a worse-than-expected third virus wave in the summer. Tougher Covid-19 rules warning after party weekend; Hong Kong records 6 new cases A false sense of security has been further reinforced by the much-touted travel bubble and resumption of cross-border travel in the run-up to the end-of-year holidays. The resurgence in Europe and elsewhere is a clear reminder that there is a price to pay when we do not observe health precautions as seriously as we should. Hong Kong suffered badly when a brief respite in June was truncated by another citywide outbreak, the fallout from which has yet to be contained. All signs are pointing to a more devastating fourth wave stemming from the mix of the winter flu season with the coronavirus. The lesson is obvious. Stay vigilant at all times or suffer more severe consequences.