Mandeep Chadha, Siddhivinayak Hirve, Christina Bancej, Ian Barr, Elsa Baumeister, Braulia Caetano, Malinee Chittaganpitch, Badarch Darmaa, Joanna Ellis, Rodrigo Fasce, Herve Kadjo, Sandra Jackson, Vivian Leung, Maria Pisareva, Jocelyn Moyes, Amel Naguib, Almiro Tivane, Wenqing Zhang, On behalf of the WHO RSV Surveillance Group