The World Health Organisation on Thursday warned of “alarming rates of transmission” of Covid-19 across Europe and cautioned against shortening quarantine periods as countries in the region scrambled to find ways to reduce infections without resorting to new lockdowns.The WHO’s regional director for Europe Hans Kluge said a September surge – Europe set a new record last week, with some 54,000 cases recorded in 24 hours – “should serve as a wake-up call for all of us”.“Although these numbers…