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Early epidemiological investigations: World Health Organization UNITY protocols provide a standardized and timely international investigation framework during the COVID‐19 pandemic
Background The declaration of Coronavirus disease 2019 (COVID‐19) as a Public Health Emergency of International Concern (PHEIC) on 30 January 2020 required rapid implementation of early investigations to inform appropriate national and global public health actions. Methods The suite of existing pandemic preparedness generic epidemiological early investigation protocols was rapidly …