Missed measles vaccine doses for babies and deteriorating surveillance for measles during the pandemic are setting up a perfect storm for the disease to come roaring back, the World Health Organization (WHO) and the US Centers for Disease Control and Prevention (CDC) warned today.In other developments, global COVID-19 cases and deaths continue to trend upward, mainly driven by rises in the European region, the WHO said in its latest weekly update on the pandemic.Vaccination gaps, surveillance blind spotsThe groups aired their concerns today in their latest report on progress against measles, which looks at the latest immunization, illness, and surveillance trends.