ETIDIoH<p>Source: Lancet Infectious Diseases, <a href="https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(24)00616-9/abstract?rss=yes" rel="nofollow noopener noreferrer" target="_blank">https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(24)00616-9/abstract?rss=yes</a> </p><p><strong><em><span>Summary</span></em></strong><br><strong><em>Background</em></strong><br>Yezo virus (YEZV) is an <strong>emerging tick-borne pathogen</strong>, which was initially reported in Japan in 2021. Only one patient had been reported in China so far. We aimed to describe the epidemiological, clinical, and laboratory findings of a series of patients, and to characterise the viral genomes of YEZV.</p><p><em><strong>Methods</strong></em><br>In this active surveillance and genomic analysis, we conducted active surveillance at Mudanjiang Forestry Central Hospital, Heilongjiang Province of northeast China. Participants were eligible for inclusion if they sought medical care for a recent tick bite between May 1 and July 31, in 2022 and 2023, and between May 1 and July 10, in 2024. We collected sera from participants to detect YEZV infection by meta-transcriptomic sequencing, real-time RT-PCR, and indirect immunofluorescence assay. We isolated YEZV by cell culture and characterised the pathogen by morphological and phylogenetic analyses.</p><p><strong><em>Findings</em></strong><br>A series of 18 patients with YEZV infection (12 male and six female; median age 53 years, IQR 45–60) were identified among 988 participants. The patients presented with <strong>fever </strong>(18 patients, 100%), <strong>headache </strong>(ten patients, 56%), <strong>dizziness </strong>(nine patients, 50%), <strong>malaise</strong> (three patients, 17%), <strong>lumbago </strong>(three patients, 17%), and <strong>cough </strong>(three patients, 17%). Nine (50%) patients had <strong>rash </strong>around the tick bite site and four (22%) had <strong>lymphadenopathy</strong>. Nine (50%) patients had <strong>gastrointestinal symptoms</strong>, and five (28%) had <strong>neurological symptoms</strong>. We observed <strong>leukopenia </strong>in ten (63%) and <strong>thrombocytopenia </strong>in five (31%) of 16 assessed patients. Elevated hepatic <strong>transaminase </strong>concentrations were identified in 13 (72%) of all 18 patients, <strong>lactate dehydrogenase</strong> or α-hydroxybutyric dehydrogenase in nine (50%), <strong>serum amyloid protein A</strong> in 13 (72%), and <strong>hypersensitive C-reactive protein</strong> in ten (56%). Eight (7%) of 119 <strong>Ixodes persulcatus ticks</strong> removed from participants were positive for YEZV. Three YEZV strains were isolated from the sera of patients. Ten viral genomes were obtained from five patients, a blood-sucking I persulcatus removed from a participant, and four host-questing tick samples collected in the areas where patients were identified or in the adjacent region. Phylogenetic analyses revealed that YEZVs in either patients or ticks were divided into two clades, each with distinct mutations.</p><p><strong><em>Interpretation</em></strong><br>Awareness of YEZV infection is important and clinicians should consider the virus when diagnosing patients with suitable symptoms.</p><p>____</p><p><a href="https://etidioh.wordpress.com/2024/11/08/a-series-of-patients-infected-with-the-emerging-tick-borne-yezo-virus-in-china-an-active-surveillance-and-genomic-analysis/" class="" rel="nofollow noopener noreferrer" target="_blank">https://etidioh.wordpress.com/2024/11/08/a-series-of-patients-infected-with-the-emerging-tick-borne-yezo-virus-in-china-an-active-surveillance-and-genomic-analysis/</a></p><p><a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://etidioh.wordpress.com/tag/abstract/" target="_blank">#abstract</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://etidioh.wordpress.com/tag/arbovirus/" target="_blank">#ARBOVIRUS</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://etidioh.wordpress.com/tag/china-2/" target="_blank">#china</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://etidioh.wordpress.com/tag/health/" target="_blank">#health</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://etidioh.wordpress.com/tag/news/" target="_blank">#news</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://etidioh.wordpress.com/tag/research-2/" target="_blank">#research</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://etidioh.wordpress.com/tag/tick-borne-infections-2/" target="_blank">#tickBorneInfections</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://etidioh.wordpress.com/tag/ticks/" target="_blank">#ticks</a> <a rel="nofollow noopener noreferrer" class="hashtag u-tag u-category" href="https://etidioh.wordpress.com/tag/yezo-virus/" target="_blank">#yezoVirus</a></p>