CUHK study confirms that rotavirus vaccines are highly effective for Hong Kong children. (From left) Ms. Karene Hoi Ting YEUNG, Postgraduate student, Department of Paediatrics, CUHK; Prof. Paul Kay Sheung CHAN, Chairman of the Department of Microbiology, CUHK; Dr. James HEFFELFINGER, Lead in New Vaccines, Expanded Programme on Immunisation Unit, Western Pacific Regional Office of WHO; Dr. Kate Ching Ching CHAN, Assistant Professor, Department of Paediatrics, CUHK; and Prof. Tony NELSON, Clinical Professional Consultant, Department of Paediatrics, CUHK.