LONDON : Britain is at a "tipping point" in the coronavirus crisis and the country must act now to stop history repeating itself, the deputy chief medical officer for England said on Sunday, urging people to follow the rules.With the number of cases rapidly rising particularly in the north of England, ministers are readying a new set of rules to try to tackle the crisis that will include handing more power to local leaders to track the virus' spread.Jonathan Van Tam said in an opinion article that the spread of COVID-19 was now moving from younger adult age groups to older people in the worst affected areas, and "just as night follow day, increases in deaths will now follow"."In our national fight against COVID-19, we are at a tipping point.