As coronavirus pandemic deepens, over 117 million children in 37 countries are expected to miss out on receiving live-saving measles vaccine, the United Nations said on Tuesday.Measles immunisation campaigns in 24 countries have already been delayed and more will be postponed, the World Health Organization and the UN children's fund UNICEF said."Together, more than 117 million children in 37 countries, many of whom live in regions with ongoing measles outbreaks, could be impacted by the suspension of scheduled immunisation activities," Measles and Rubella Initiative (M & RI) said in a statement.New WHO guidelines endorsed by the Strategic Advisory Group of Experts on Immunisation aim to help countries to sustain immunisation activities during the COVID-19 pandemic."The @MeaslesRubella Initiative supports recommendations to: temporarily pause preventive immunisation campaigns where there's no active outbreak of a vaccine-preventable disease continue routine immunisation services, ..