{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"institution":[{"name":"Research Square"}],"indexed":{"date-parts":[[2024,11,12]],"date-time":"2024-11-12T05:14:28Z","timestamp":1731388468286,"version":"3.28.0"},"posted":{"date-parts":[[2024,8,26]]},"group-title":"In Review","reference-count":27,"publisher":"Springer Science and Business Media LLC","license":[{"start":{"date-parts":[[2024,8,26]],"date-time":"2024-08-26T00:00:00Z","timestamp":1724630400000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"accepted":{"date-parts":[[2024,7,20]]},"abstract":"<title>Abstract<\/title>\n        <p><bold>Background: <\/bold>As<bold> <\/bold>many studies have shown conflicting results regarding the extent of viraemia and clinical disease severity, we sought to investigate if viraemia during early dengue illness is associated with subsequent clinical disease severity.\n<bold>Methods:<\/bold> Realtime PCR was carried out to identify the dengue virus (DENV serotype), in 362 patients, presenting within the first 4 days of illness, from 2017 to 2022, in Colombo Sri Lanka. To characterize subsequent clinical disease severity, all patients were followed throughout their illness daily and disease severity classified according to WHO 1997 and 2009 disease classification.\n<bold>Results:<\/bold> 263 patients had DF, 99 progressed to develop DHF, and 15\/99 with DHF developed shock (DSS). Although the viral loads were higher in the febrile phase in patients who progressed to develop DHF than in patients with DF this was not significant (p=0.5). Significant differences were observed in viral loads in patients infected with different DENV serotypes (p=0.0009), with lowest viral loads detected in DENV2 and the highest viral loads in DENV3.  Sub-analysis for association of viraemia with disease severity for each DENV serotyped was again not significant. Although those infected with DENV2 had lower viral loads, infection with DENV2 was significantly associated with a higher risk of developing DHF (p=0.011, Odds ratio 1.9; 95% CI 1.164 to 3.078). Based on the WHO 2009 disease classification, 233 had dengue with warning signs (DWW), 114 dengue without warning signs (DWoWS), and 15 had severe dengue (SD). No significant difference was observed in the viral loads between those with SD, DWW and DWoWS (p=0.27).\n<bold>Conclusions: <\/bold>Viral loads were significantly different in the febrile phase between different DENV serotypes, and do not appear to significantly associate with subsequent clinical disease severity in a large Sri Lankan cohort.<\/p>","DOI":"10.21203\/rs.3.rs-4771323\/v1","type":"posted-content","created":{"date-parts":[[2024,8,26]],"date-time":"2024-08-26T15:57:20Z","timestamp":1724687840000},"source":"Crossref","is-referenced-by-count":0,"title":["Are viral loads in the febrile phase a predictive factor of dengue disease severity?"],"prefix":"10.21203","author":[{"given":"Shashika","family":"Dayarathna","sequence":"first","affiliation":[{"name":"University of Sri Jayewardenepura"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Heshan","family":"Kuruppu","sequence":"additional","affiliation":[{"name":"University of Sri Jayewardenepura"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tehani","family":"Silva","sequence":"additional","affiliation":[{"name":"University of Sri Jayewardenepura"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Laksiri","family":"Gomes","sequence":"additional","affiliation":[{"name":"University of Sri Jayewardenepura"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N. L. Ajantha","family":"Shyamali","sequence":"additional","affiliation":[{"name":"University of Sri Jayewardenepura"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chandima","family":"Jeewandara","sequence":"additional","affiliation":[{"name":"University of Sri Jayewardenepura"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dinuka","family":"Ariyaratne","sequence":"additional","affiliation":[{"name":"University of Sri Jayewardenepura"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shyrar Tanussiya","family":"Ramu","sequence":"additional","affiliation":[{"name":"University of Sri Jayewardenepura"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ananda","family":"Wijewickrama","sequence":"additional","affiliation":[{"name":"National Institute of Infectious Diseases"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Graham S.","family":"Ogg","sequence":"additional","affiliation":[{"name":"University of Oxford"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Gathsaurie Neelika","family":"Malavige","sequence":"additional","affiliation":[{"name":"University of Sri Jayewardenepura"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","reference":[{"key":"ref1","volume-title":"Ten threats to global health in 2019","author":"WHO","year":"2019","unstructured":"WHO. 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