WHO says global rise in COVID cases is 'tip of the iceberg'

Ambulance staff wearing PPE prepare to transfer a media worker who tested positive for Covid-19 to a hotel being used as an isolation centre during the Beijing 2022 Winter Olympics in Beijing, China, February 17, 2022. [Reuters]

Figures showing a global rise in COVID-19 cases could herald a much bigger problem as some countries also report a drop in testing rates, the WHO said on Tuesday, warning nations to remain vigilant against the virus.