#arbovirus — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #arbovirus, aggregated by home.social.
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Arboviruses induce acute lytic infection in humans, but how can they infect #mosquito vectors without compromising host viability? This study shows that #arbovirus infection is maintained by limiting viral protein synthesis via repression of #viral RNA translation @PLOSBiology https://plos.io/4tzdog6
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Arboviruses induce acute lytic infection in humans, but how can they infect #mosquito vectors without compromising host viability? This study shows that #arbovirus infection is maintained by limiting viral protein synthesis via repression of #viral RNA translation @PLOSBiology https://plos.io/4tzdog6
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North Carolina has had 9 cases of West Nile virus so far this year. 3 cases were in Durham. Mosquitoes carry it; Durham did targeted mosquito spraying within ~1 mile of Trinity Park. Ok, good.
I wonder how TP wound up w/ 3 diagnosed cases? My understanding is that ~1% or less of cases are diagnosed. I wonder if, maybe for economic reasons, folks in TP were simply more likely to be diagnosed? https://dconc.gov/DurhamCo-News/Public-Health/Final-Round-of-Targeted-ULV-Spraying-to-be-Conducted-October-15-16.htm #DurhamNC #WestNile #arbovirus #publicHealth
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North Carolina has had 9 cases of West Nile virus so far this year. 3 cases were in Durham. Mosquitoes carry it; Durham did targeted mosquito spraying within ~1 mile of Trinity Park. Ok, good.
I wonder how TP wound up w/ 3 diagnosed cases? My understanding is that ~1% or less of cases are diagnosed. I wonder if, maybe for economic reasons, folks in TP were simply more likely to be diagnosed? https://dconc.gov/DurhamCo-News/Public-Health/Final-Round-of-Targeted-ULV-Spraying-to-be-Conducted-October-15-16.htm #DurhamNC #WestNile #arbovirus #publicHealth
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#Italy, Integrated #Surveillance for #WNV & #USUV - Weekly Bulletin No. 10, 18 September '25 (Summary), https://etidiohnew.blogspot.com/2025/09/italy-integrated-surveillance-for-wnv_18.html
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#Italy, Integrated #Surveillance for #WNV & #USUV - Weekly Bulletin No. 10, 18 September '25 (Summary), https://etidiohnew.blogspot.com/2025/09/italy-integrated-surveillance-for-wnv_18.html
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#Italy, #Chikungunya #outbreak near town of #Verona continues to grow with a total of 46 autochthonous cases so far, https://www.ilsole24ore.com/art/chikungunya-salgono-46-casi-veronese-stop-sagre-AHAdKddC
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#Italy, #Chikungunya #outbreak near town of #Verona continues to grow with a total of 46 autochthonous cases so far, https://www.ilsole24ore.com/art/chikungunya-salgono-46-casi-veronese-stop-sagre-AHAdKddC
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#Italy, Integrated #Surveillance for #WNV & #USUV - Weekly Bulletin No. 9, 11 September '25 (summary): 80 new cases, https://etidiohnew.blogspot.com/2025/09/italy-integrated-surveillance-for-wnv.html
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#Italy, Integrated #Surveillance for #WNV & #USUV - Weekly Bulletin No. 9, 11 September '25 (summary): 80 new cases, https://etidiohnew.blogspot.com/2025/09/italy-integrated-surveillance-for-wnv.html
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Shared viral burdens: Evidence of active #Usutu virus circulation and multi- #arbovirus exposure in migrant and resident #birds at wintering locations in #Nigeria, https://etidiohnew.blogspot.com/2025/09/shared-viral-burdens-evidence-of-active.html
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Shared viral burdens: Evidence of active #Usutu virus circulation and multi- #arbovirus exposure in migrant and resident #birds at wintering locations in #Nigeria, https://etidiohnew.blogspot.com/2025/09/shared-viral-burdens-evidence-of-active.html
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#Italy, #WNV: a 80 years-old man died of #neuroinvasive form of disease, the eight #fatal case in #Latium Region, https://www.ilsole24ore.com/art/west-nile-muore-80enne-aprilia-e-ottavo-lazio-AHbKvI8B https://www.ilsole24ore.com/art/west-nile-muore-80enne-aprilia-e-ottavo-lazio-AHbKvI8B
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#Italy, #WNV: a 80 years-old man died of #neuroinvasive form of disease, the eight #fatal case in #Latium Region, https://www.ilsole24ore.com/art/west-nile-muore-80enne-aprilia-e-ottavo-lazio-AHbKvI8B https://www.ilsole24ore.com/art/west-nile-muore-80enne-aprilia-e-ottavo-lazio-AHbKvI8B
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#Italy, rapid surge in #WNV neuroinvasive disease and West Nile Fever in Latium and Campania Regions, with 58 confirmed cases of which nine were fatal, https://www.ilsole24ore.com/art/west-nile-altro-morto-caserta-e-nono-italia-AHPZZgyB
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#Italy, rapid surge in #WNV neuroinvasive disease and West Nile Fever in Latium and Campania Regions, with 58 confirmed cases of which nine were fatal, https://www.ilsole24ore.com/art/west-nile-altro-morto-caserta-e-nono-italia-AHPZZgyB
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Three districts in South #China’s #Foshan confirm 1,199 #Chikungunya cases, mobilize local residents for #mosquito eradication, https://www.globaltimes.cn/page/202507/1338734.shtml
On the same day, the health bureau of Nanhai district in Foshan also released updated figures, confirming 16 mild chikungunya cases as of Friday.
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Three districts in South #China’s #Foshan confirm 1,199 #Chikungunya cases, mobilize local residents for #mosquito eradication, https://www.globaltimes.cn/page/202507/1338734.shtml
On the same day, the health bureau of Nanhai district in Foshan also released updated figures, confirming 16 mild chikungunya cases as of Friday.
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#Italy, one autochthonous case of #chikungunya reported in #Piacenza town, Emilia-Romagna Region, https://www.ilfattoquotidiano.it/2025/07/14/chikungunya-caso-autoctono-piacenza-zanzara-tigre-notizie/8061562/
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#Italy, one autochthonous case of #chikungunya reported in #Piacenza town, Emilia-Romagna Region, https://www.ilfattoquotidiano.it/2025/07/14/chikungunya-caso-autoctono-piacenza-zanzara-tigre-notizie/8061562/
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#Italy, #Toscana virus infected an elderly resident in a small town near #Padua, the 2nd case in the area, https://www.ilgazzettino.it/schede/toscana_virus_anziano_grave_lozzo_atestino_padova-8949136.html
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#Italy, #Toscana virus infected an elderly resident in a small town near #Padua, the 2nd case in the area, https://www.ilgazzettino.it/schede/toscana_virus_anziano_grave_lozzo_atestino_padova-8949136.html
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#Italy reported instances of #Dengue and #Chikungunya autochthonous cases in recent weeks, experts' advice to the public and current risk, https://www.ilsole24ore.com/art/dengue-e-chikungunya-mappa-rischio-italia-e-consigli-esperti-AHa2yTeB
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#Italy reported instances of #Dengue and #Chikungunya autochthonous cases in recent weeks, experts' advice to the public and current risk, https://www.ilsole24ore.com/art/dengue-e-chikungunya-mappa-rischio-italia-e-consigli-esperti-AHa2yTeB
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Yellow fever - Region of the #Americas (#WHO D.O.N., May 16 '25), https://etidiohnew.blogspot.com/2025/05/yellow-fever-region-of-americas-who-don.html
#arbovirus #flavivirus #brazil #colombia #peru #bolivia #mosquitoes
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Yellow fever - Region of the #Americas (#WHO D.O.N., May 16 '25), https://etidiohnew.blogspot.com/2025/05/yellow-fever-region-of-americas-who-don.html
#arbovirus #flavivirus #brazil #colombia #peru #bolivia #mosquitoes
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Prevalence, clinical #management, and #outcomes of #adults hospitalised with endemic #arbovirus illness in southeast #Europe (MERMAIDS-ARBO): a prospective observational study, https://etidiohnew.blogspot.com/2025/02/prevalence-clinical-management-and.html
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Prevalence, clinical #management, and #outcomes of #adults hospitalised with endemic #arbovirus illness in southeast #Europe (MERMAIDS-ARBO): a prospective observational study, https://etidiohnew.blogspot.com/2025/02/prevalence-clinical-management-and.html
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Prior #influenza virus #infection alleviates an #arbovirus #encephalitis by reducing viral titer, #inflammation, and cellular infiltrates in the central nervous system, https://etidiohnew.blogspot.com/2025/01/prior-influenza-virus-infection.html
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Prior #influenza virus #infection alleviates an #arbovirus #encephalitis by reducing viral titer, #inflammation, and cellular infiltrates in the central nervous system, https://etidiohnew.blogspot.com/2025/01/prior-influenza-virus-infection.html
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#Oropouche virus disease – Region of the #Americas
Source: World Health Organization, https://www.who.int/emergencies/disease-outbreak-news/item/2024-DON545
Situation at a glance
Since the last Disease Outbreak News on this event was published on 23 August 2024, three additional countries and one territory (Ecuador, Guyana, Panama and Cayman Island) have reported confirmed Oropouche virus disease in the Region of the Americas in 2024. In addition, imported Oropouche cases have been reported from Canada, the United States of America and countries of the European Region. As of 25 November 2024, a total of 11 634 confirmed Oropouche cases, including two deaths, have been reported in the Region of the Americas, across ten countries and one territory: Bolivia (Plurinational State of), Brazil, Canada, Cayman Islands, Colombia, Cuba, Ecuador, Guyana, Panama, Peru and the United States of America. Based on available information, WHO assesses the overall public health risk posed by this virus to be high at the regional level and low at the global level. As the arbovirus season is starting in the region, WHO urges countries at risk to strengthen epidemiological and entomological surveillance and to reinforce preventive measures in the population. This is crucial due to the geographical expansion of the virus and the possible new vectors and transmission routes, including vertical transmission, that could affect both the general population and vulnerable groups, such as pregnant women, their fetuses, and newborns.
Description of the situation
Since the last Disease Outbreak News on this event was published on 23 August 2024, three additional countries and one territory (Ecuador, Guyana, and Panama) have reported confirmed Oropouche virus disease in the Region of the Americas. In addition, imported Oropouche cases were reported from the Cayman Islands, Canada, the United States of America and a few countries in the European Region.
Between 1 January and 25 November 2024, 11 634 confirmed Oropouche cases, including two deaths, have been reported in the Region of the Americas: Bolivia (Plurinational State of) (356 cases), Brazil (9563 cases, including two deaths), Canada (two imported cases), Cayman Island (one imported case), Colombia (74 cases), Cuba (603 cases), Ecuador (two cases), Guyana (two cases), Panama (one case), Peru (936 cases), and the United States of America (94 imported cases). Additionally, imported Oropouche cases have been reported in countries in the European Region (30 cases) (1).
Cases and consequences of vertical transmission of Oropouche virus infection have been reported in Brazil and Cuba. Brazil has confirmed three cases of vertical transmission (two cases of fetal death and one case of congenital anomaly) and reported that under investigation are 15 fetal deaths, five spontaneous miscarriages, and three cases of congenital anomalies.[1] Additionally, in September, Cuba confirmed a case of congenital anomaly with two further cases under investigation.
(…)
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#americanRegion #ARBOVIRUS #europeanRegion #health #mpox #news #oropoucheVirus #pregnancy #updates #WHO #world
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#Usutu virus African 3.1 #lineage, #Portugal, 2021-2023
Source: BioRxIV, https://www.biorxiv.org/content/10.1101/2024.12.04.626753v1?rss=1
Abstract
Background: Usutu virus (Orthoflavivirus usutuense, USUV), a neurotropic arthropod-borne RNA virus of the family Flaviviridae, is a zoonotic virus that has spread throughout the European continent over the last three decades, since its emergence in Italy in 1996. However, no cases of USUV have been reported in Portugal so far.
Material and methods: In the scope of an active surveillance program for Orthoflavivirus, we collected growing feather samples from 249 red-legged partridges (Alectoris rufa) hunted in southern Portugal during the 2021-2023 hunting seasons. Samples positive for USUV were subjected to whole genome sequencing and strain characterization.
Results: Two partridges tested positive for USUV. Phylogenetic analyses of whole and partial genomes assigned the USUV strains to the African 3 lineage, specifically the African 3.1 sub-lineage.
Conclusions: Our study confirms, for the first time, the circulation of USUV in wild birds in Portugal. Active surveillance of hunted partridges proved to be a useful, accessible, and cost-effective method for USUV monitoring, further supporting their value as effective sentinels for Orthoflavivirus surveillance. Given the ongoing circulation of USUV and the increasing risk of its spillover to other domestic and wild animals, and humans, additional efforts are needed to improve virus surveillance in Portugal from a One Health perspective.
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#abstract #ARBOVIRUS #FLAVIVIRUS #PORTUGAL #research #USUTUVIRUS #WILDBIRDS
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Source: Lancet Infectious Diseases, https://www.thelancet.com/journals/laninf/article/PIIS1473-3099(24)00616-9/abstract?rss=yes
Summary
Background
Yezo virus (YEZV) is an emerging tick-borne pathogen, 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.Methods
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.Findings
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 fever (18 patients, 100%), headache (ten patients, 56%), dizziness (nine patients, 50%), malaise (three patients, 17%), lumbago (three patients, 17%), and cough (three patients, 17%). Nine (50%) patients had rash around the tick bite site and four (22%) had lymphadenopathy. Nine (50%) patients had gastrointestinal symptoms, and five (28%) had neurological symptoms. We observed leukopenia in ten (63%) and thrombocytopenia in five (31%) of 16 assessed patients. Elevated hepatic transaminase concentrations were identified in 13 (72%) of all 18 patients, lactate dehydrogenase or α-hydroxybutyric dehydrogenase in nine (50%), serum amyloid protein A in 13 (72%), and hypersensitive C-reactive protein in ten (56%). Eight (7%) of 119 Ixodes persulcatus ticks 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.Interpretation
Awareness of YEZV infection is important and clinicians should consider the virus when diagnosing patients with suitable symptoms.____
#abstract #ARBOVIRUS #china #health #news #research #tickBorneInfections #ticks #yezoVirus
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Source: MedRxIV, https://www.medrxiv.org/content/10.1101/2024.10.29.24316328v1
Abstract
In March 2024, the Pan American Health Organization (PAHO) issued an alert in response to a rapid increase in Oropouche fever cases across South America. Brazil has been particularly affected, reporting a novel reassortant lineage of the Oropouche virus (OROV) and expansion to previously non-endemic areas beyond the Amazon Basin. Utilising phylogeographic approaches, we reveal a multi-scale expansion process with both short and long-distance dispersal events, and diffusion velocities in line with human-mediated jumps. We identify forest cover, banana and cocoa cultivation, temperature, and human population density as key environmental factors associated with OROV range expansion. Using ecological niche modelling, we show that OROV circulated in areas of enhanced ecological suitability immediately preceding its explosive epidemic expansion in the Amazon. This likely resulted from the virus being introduced into simultaneously densely populated and environmentally favourable regions in the Amazon, such as Manaus, leading to an amplified epidemic and spread beyond the Amazon. Our study provides valuable insights into the dispersal and ecological dynamics of OROV, highlighting the role of human mobility in colonisation of new areas, and raising concern over high viral suitability along the Brazilian coast.____
#abstract #ARBOVIRUS #biodiversity #brazil #CLIMATECHANGE #conservation #environment #oropoucheVirus #research #technology
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Epidemiological #Alert - #Oropouche in the Region of the #Americas: #vertical #transmission event under #investigation in #Brazil - 17 July 2024 https://reliefweb.int/report/brazil/epidemiological-alert-oropouche-region-americas-vertical-transmission-event-under-investigation-brazil-17-july-2024
On 6 June 2024, case sought medical attention after noticing lack of #fetal #mobility at 30 wks gestation. On same day, fetal #death was confirmed. Fetus was sent to Death Verification Service of Recife (SVO-Recife per its acronym in Portuguese) for #histopathological examination to investigate the presence of #arbovirus (1).
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Epidemiological #Alert - #Oropouche in the Region of the #Americas: #vertical #transmission event under #investigation in #Brazil - 17 July 2024 https://reliefweb.int/report/brazil/epidemiological-alert-oropouche-region-americas-vertical-transmission-event-under-investigation-brazil-17-july-2024
On 6 June 2024, case sought medical attention after noticing lack of #fetal #mobility at 30 wks gestation. On same day, fetal #death was confirmed. Fetus was sent to Death Verification Service of Recife (SVO-Recife per its acronym in Portuguese) for #histopathological examination to investigate the presence of #arbovirus (1).
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#HK CHP investigates (2nd) imported case of #Zika Virus #Infection (a collateral of the earlier detected case this week), https://www.info.gov.hk/gia/general/202311/17/P2023111700576.htm #arbovirus #flavivirus
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#HK CHP investigates (2nd) imported case of #Zika Virus #Infection (a collateral of the earlier detected case this week), https://www.info.gov.hk/gia/general/202311/17/P2023111700576.htm #arbovirus #flavivirus
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#Italy, a #fatal case of #dengue fever reported in #Tuscany Region: a 50 years old woman returned from a foreign country, https://www.iltirreno.it/empoli/cronaca/2023/11/16/news/dengue-fucecchio-donna-muore-1.100422547 #arbovirus #flavivirus #climatecrisis
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#Italy, a #fatal case of #dengue fever reported in #Tuscany Region: a 50 years old woman returned from a foreign country, https://www.iltirreno.it/empoli/cronaca/2023/11/16/news/dengue-fucecchio-donna-muore-1.100422547 #arbovirus #flavivirus #climatecrisis
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#HK #CHP investigates imported case of #Zika Virus #Infection https://www.info.gov.hk/gia/general/202311/15/P2023111500604.htm #arbovirus #flavivirus
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#HK #CHP investigates imported case of #Zika Virus #Infection https://www.info.gov.hk/gia/general/202311/15/P2023111500604.htm #arbovirus #flavivirus
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#Arbovirus #surveillance in #pregnant women in north-central #Nigeria, 2019-2022, J Clin Virol.: https://doi.org/10.1016/j.jcv.2023.105616 #zika #dengue #chikungunya #pregnancy
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#Arbovirus #surveillance in #pregnant women in north-central #Nigeria, 2019-2022, J Clin Virol.: https://doi.org/10.1016/j.jcv.2023.105616 #zika #dengue #chikungunya #pregnancy
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Infectious Disease Experts Warn: Brace for Yellow Fever Resurgence in U.S.
#InfectiousDisease #YellowFever #arbovirus
Perspective article in NEJM co-authored by Dr. Peter Hotez & Dr. Angelle Desiree LaBeaud at https://www.nejm.org/doi/10.1056/NEJMp2308420 (you can download an audio interview with Hotez without at account)
https://scitechdaily.com/infectious-disease-experts-warn-brace-for-yellow-fever-resurgence-in-u-s/ -
Infectious Disease Experts Warn: Brace for Yellow Fever Resurgence in U.S.
#InfectiousDisease #YellowFever #arbovirus
Perspective article in NEJM co-authored by Dr. Peter Hotez & Dr. Angelle Desiree LaBeaud at https://www.nejm.org/doi/10.1056/NEJMp2308420 (you can download an audio interview with Hotez without at account)
https://scitechdaily.com/infectious-disease-experts-warn-brace-for-yellow-fever-resurgence-in-u-s/ -
#Dengue - #Chad, first occurrence in the country, #WHO D.O.N., https://www.who.int/emergencies/disease-outbreak-news/item/2023-DON491 #flavivirus #arbovirus #mosquitoes #EIDs #report
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#Dengue - #Chad, first occurrence in the country, #WHO D.O.N., https://www.who.int/emergencies/disease-outbreak-news/item/2023-DON491 #flavivirus #arbovirus #mosquitoes #EIDs #report
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#Zika Virus #References (by AMEDEO, September 24 ’23),
https://etidioh.wordpress.com/2023/09/24/zika-virus-references-by-amedeo-september-24-23/ #research #science #library #arbovirus #flavivirus #EIDs #mosquitoes -
#Zika Virus #References (by AMEDEO, September 24 ’23),
https://etidioh.wordpress.com/2023/09/24/zika-virus-references-by-amedeo-september-24-23/ #research #science #library #arbovirus #flavivirus #EIDs #mosquitoes -
#Zika Virus #References (by AMEDEO, September 16 ’23),
https://etidioh.wordpress.com/2023/09/16/zika-virus-references-by-amedeo-september-16-23/ #science #medicine #research #arbovirus #flavivirus #library #mosquitoes -
#Zika Virus #References (by AMEDEO, September 10 ’23),
https://etidioh.wordpress.com/2023/09/10/zika-virus-references-by-amedeo-september-10-23/ #science #medicine #library #arbovirus #flavivirus #mosquitoes -
Jamestown Canyon #virus {#JCV} is transmissible by #Aedes aegypti and is only moderately blocked by #Wolbachia co-infection https://journals.plos.org/plosntds/article?id=10.1371/journal.pntd.0011616 #arbovirus #bunyavirus #EIDs #mosquitoes #research #science
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#Zika Virus #References (by AMEDEO, September 3 ’23),
https://etidioh.wordpress.com/2023/09/03/zika-virus-references-by-amedeo-september-3-23/ #flavivirus #arbovirus #science #medicine #mosquitoes #library #EIDs -
#Italy, one new #fatal case of #WNV infection, this time in #Lombardy Region, https://www.ilfattoquotidiano.it/2023/08/31/west-nile-un-morto-in-brianza-la-malattia-concausa-del-decesso-a-seregno-decisa-una-disinfestazione-straordinaria/7277843/ #arbovirus #flavivirus #mosquitoes #news