About the Author

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Samia Metwally is a Senior Animal Health Officer (Virologist) in the Animal Production and Health Division at The Food and Agriculture Organization of the United Nations, Rome, Italy. Gerrit Viljoen is Head of Animal Production and Health Section of the Joint FAO/IAEA Division, Vienna, Austria. Ahmed El Idrissi is Former Senior Animal Health Officer (Bacterial & Zoonotic Diseases) in the Animal Production and Health Division at The Food and Agriculture Organization of the United Nations, Rome, Italy.