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Does Zika Virus Cause Microcephaly - Applying the Bradford Hill Viewpoints

Introduction: Zika virus has been documented since 1952, but been associated with mild, self-limiting disease. Zika virus is classified as an arbovirus from a family of Flaviviridae and primarily spread by Aedes Aegypti mosquitos. However, in a large outbreak in Brazil in 2015, Zika virus has been associated with microcephaly. Methods: In this review we applied the Bradford-Hill ...

Availability, consistency and evidence-base of policies and guidelines on the use of mask and respirator to protect hospital health care workers: a global analysis

Chughtai 0 Holly Seale 0 Chandini Raina MacIntyre 0 0 School of Public Health and Community Medicine, UNSW Medicine, University of New South Wales , Sydney 2052 , Australia Background: Currently there is