Fresh waves of Covid infections show the pandemic is “nowhere near over”, the World Health Organization’s chief warned Tuesday, voicing concern the virus is “running freely”. Tedros Adhanom Ghebreyesus said he was worried that case numbers were continuing to rise, putting further pressure on stretched health systems and workers. “New waves of the virus demonstrate again that Covid-19 is nowhere near over,” he told a news conference, adding: “As the virus pushes at us, we must push back.” “The virus is running freely and countries are not effectively managing the disease burden based on their c…