Geneva: Some countries have seen "upticks" in COVID-19 cases as lockdowns ease, and populations must protect themselves from the coronavirus while authorities continue testing, the World Health Organization (WHO) said on Friday.The epicentre of the pandemic is currently in countries of Central, South and North America, particularly the United States, WHO spokeswoman Margaret Harris said."On upticks (in cases), yes we have seen in countries around the world - I'm not talking specifically about Europe - when the lockdowns ease, when the social distancing measures ease, people sometimes interpret this as 'OK, it's over'," Harris told a U.N.