Arrived LHR on 24 Feb from Perth via Doha, and really, really surprised to not face any temperature testing, or even receive handouts. This was after the Viking cruise line had warned all intending pax that they, (VIKING), would not accept anyone transiting HKG or Macau and from any China port - without a 14 day 'quarantine' period, and there would be pre-boarding temp testing for all. We were further surprised to read about, and watch, the denigration of 2 schools voluntarily locking down after staff tested positive.
quarantine. 1.n
(period of) isolation imposed on ship or persons or animals to prevent infection or contagion
Now in recent times, the very essence of 'quarantine' has been diluted by weak-kneed, bleeding political hearts who have coined the truly disgraceful concept of post-entry quarantine. Under this system, the disease is allowed entry - and then, (when we are absolutely, positively 100% sure, that it really is the feared disease : we'll take action. Too late by then!
As a former plant pathologist who has dealt with plant disease/insect epidemics, I cannot believe the lack of will to target or profile any biosecurity threat, and to hell with wounded national egos if one country decides to block all movements from the threat. That's what makes quarantine effective. If a few dictators are offended ...... tough! Western nations need to grow a pair of balls!