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Outbreak of Epidemic Keratoconjunctivitis Caused By Human Adenoviruses in Central Iraq

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 نيران كاظم فرهود الربيعي
17/02/2019 06:58:44
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Epidemic keratoconjunctivitis (EKC) is caused by human adenoviruses belong to the genus Mastadenovirus of the family Adenoviridae. Human adenoviruses comprise more than 60 different serotypes/types classified into seven groups (A–G). EKC is a hyper acute and highly contagious infection of the eye caused by HAdV-D particularly, types 8, 19 and 37. More recently, HAdV-D53, D54, and D56 also have been associated with EKC. Adenovirus infections are implicated in most keratoconjunctivitis cases and it is more common in adults than children. Objective: The present study aims to detect human adenoviruses in conjunctival swabs of patients with keratoconjunctivitis and to clarify the significance of HAdVs in patients living in Babylon Governorate. Results: The results of this study showed that human adenoviruses was identified in 84 of the 93 conjunctival specimens using the nested-PCR assay, but not present in 9 specimens. EKC most frequently occurred between 21-40 years age group. EKC was predominantly in male (76.2%) from female (23.8%) and it is more common in adults (91.7%), but rarely occurred in children (8.3%).The most prevalent signs and symptoms were red eye, conjunctivitis, pain, itching tearing decreased visual acuity and photophobia were presented (100%) in all HAdVs cases, following by foreign body sensation (84.5%), chemosis (76.2%), subepithelial infiltrates (75%) bilateral (73.8%) conjunctival membrane (72.6%) pseudomembranes (71.4%) and conjunctival hemorrhage (38%). It is also noteworthy that in some cases the pharyngitis (22.6%) and rhinorrhea (21.4%) as concomitant finding. Outbreak of epidemic keratoconjunctivitis caused by HAdVs was reaching its peak in November (23.8%).

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  • Epidemic keratoconjunctivitis (EKC) is caused by human adenoviruses belong to the genus Mastadenovirus of the family Adenoviridae. Human adenoviruses comprise more than 60 different serotypes/types classified into seven groups (A–G).