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Related to orphan viruses: Respiratory Enteric Orphan Virus
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References in periodicals archive ?
However, gaps in campaign performance and surveillance, evidenced by the persistence of continually missed children and the detection of wild viruses in environmental samples and orphan viruses isolated from cases and environmental samples are indicative of ongoing program challenges.
Most (86%) WPV cases in Afghanistan in 2014 resulted from importation from Pakistan; however, the detection of orphan viruses highlights the need to strengthen the quality of both polio vaccination and AFP surveillance (10).
They are designated as orphan viruses, and more than half of the adult population possess antibodies directed against reoviruses, which suggests that infection occurs frequently without any specific effect on human health.