A5027198016- SARS-CoV-2 and COVID-19 Research
- COVID-19 Clinical Research Studies
- Vaccine Coverage and Hesitancy
- SARS-CoV-2 detection and testing
- COVID-19 epidemiological studies
- COVID-19 and Mental Health
- Bacterial Infections and Vaccines
- Influenza Virus Research Studies
- Viral gastroenteritis research and epidemiology
- Mosquito-borne diseases and control
- Escherichia coli research studies
- Fecal contamination and water quality
- Liver Disease and Transplantation
- COVID-19 Pandemic Impacts
- COVID-19 Impact on Reproduction
- Child Nutrition and Water Access
- COVID-19 diagnosis using AI
- Viral Infections and Vectors
- Malaria Research and Control
- Hepatitis Viruses Studies and Epidemiology
- Travel-related health issues
- Research on Leishmaniasis Studies
- Misinformation and Its Impacts
- Urban Stormwater Management Solutions
- Infection Control in Healthcare
Norwegian Institute of Public Health
2018-2025
European Centre for Disease Prevention and Control
2018-2022
Office of Readiness and Response
2022
National and Kapodistrian University of Athens
2015-2016
Hellenic Center for Disease Control & Prevention
2013-2015
University of Thessaly
2015
Centers for Disease Control and Prevention
2013-2014
In late November 2021, an outbreak of Omicron SARS-CoV-2 following a Christmas party with 117 attendees was detected in Oslo, Norway. We observed attack rate 74% and most cases developed symptoms. As at 13 December, none have been hospitalised. Most participants were 30–50 years old. Ninety-six percent them fully vaccinated. These findings corroborate reports that the variant may be more transmissible, vaccination less effective preventing infection compared Delta.
We included 39,524 COVID-19 Omicron and 51,481 Delta cases reported in Norway from December 2021 to January 2022. estimated a 73% reduced risk of hospitalisation (adjusted hazard ratio: 0.27; 95% confidence interval: 0.20-0.36) for compared with Delta. Compared unvaccinated groups, who had completed primary two-dose vaccination 7-179 days before diagnosis lower than (66% vs 93%). People vaccinated three doses similar reduction (86% 88%).
Aim: Research concerning COVID-19 among immigrants is limited. We present epidemiological data for all notified cases of the 17 largest immigrant groups in Norway, and related hospitalizations mortality. Methods: used on Norway up to 18 October 2020, associated mortality, from emergency preparedness register (including Norwegian Surveillance System Communicable Diseases) set by The Institute Public Health handle pandemic. report numbers rates per 100,000 people cases, mortality crude with...
Some variants of SARS-CoV-2 are associated with increased transmissibility, disease severity or decreased vaccine effectiveness (VE). In this population-based cohort study (n = 4,204,859), the Delta variant was identified in 5,430 (0.13%) individuals, whom 84 were admitted to hospital. VE against laboratory confirmed infection 22.4% among partly vaccinated (95% confidence interval (CI): 17.0−27.4) and 64.6% CI: 60.6−68.2) fully compared 54.5% 50.4−58.3) 84.4% (95%CI: 81.8−86.5) Alpha variant.
Since their emergence, SARS-CoV-2 variants of concern (VOC) B.1.1.7 and B.1.351 have spread worldwide. We estimated the risk hospitalisation admission to an intensive care unit (ICU) for infections with in Norway, compared non-VOC.Using linked individual-level data from national registries, we conducted a cohort study on laboratory-confirmed cases Norway diagnosed between 28 December 2020 2 May 2021. Variants were identified based whole genome sequencing, partial sequencing by Sanger or PCR...
OBJECTIVES There is limited evidence on whether the relative severity of coronavirus disease 2019 (COVID-19) in children and adolescents differs for different severe acute respiratory syndrome 2 variants. We compare risk hospitalization to COVID-19 or multisystem inflammatory (MIS-C) among unvaccinated persons <18 years with (cases) between waves Alpha, Delta, Omicron (sublineage BA.1) variants Norway. METHODS used linked individual-level data from national registries calculate...
Abstract Background COVID-19 vaccines have been crucial in the pandemic response and understanding changes effectiveness is essential to guide vaccine policies. Although Delta variant no longer dominant, properties will provide knowledge comprehend development of estimate potential over time. Methods In this population-based cohort study, we estimated Comirnaty (Pfizer/BioNTech; BNT162b2), Spikevax (Moderna; mRNA-1273), Vaxzevria (AstraZeneca; ChAdOx nCoV-19; AZD1222), or a combination...
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To limit SARS-CoV-2 spread, quarantine and isolation are obligatory in several situations Norway. We found low self-reported adherence to requested measures among 1,704 individuals (42%; 95% confidence interval: 37–48). Adherence was lower May–June–July (33–38%) compared with April (66%), higher those experiencing COVID-19-compatible symptoms (71%) without (28%). These findings suggest that consideration is required of strategies improve people’s isolation.
On 6 June 2019, the Norwegian Institute of Public Health was notified more than 50 cases gastroenteritis in Askøy. A reservoir a water supply system suspected as source outbreak because acute onset and geographical distribution cases. We investigated to confirm source, extent effect control measures. case defined person household served by Water Supply System (WSS-A) who had for 24 h between 1 19 2019. conducted pilot interviews, telephone survey an SMS-based cohort study residents WSS-A....
To estimate the risk of hospitalization among reported cases Delta variant severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) compared with Alpha in Norway, and by vaccination status.A cohort study was conducted on laboratory-confirmed SARS-CoV-2 diagnosed between 3 May 15 August 2021. Adjusted ratios (aRR) 95% confidence intervals (CI) were calculated using multi-variable log-binomial regression, accounting for variant, status, demographic characteristics, week sampling underlying...
We estimated the BNT162b2 vaccine effectiveness (VE) against any (symptomatic or not) SARS-CoV-2 Delta and Omicron infection among adolescents (aged 12-17 years) in Norway from August 2021 to January 2022.We used Cox proportional hazard models, where status was included as a time-varying covariate models were adjusted for age, sex, comorbidities, residence county, birth country, living conditions.The VE peaked at 68% (95% confidence interval [CI]: 64-71%) 62% CI: 57-66%) days 21-48 after...
Abstract Background SARS-CoV-2 reinfection rates have been shown to vary depending on the circulating variant, vaccination status and background immunity, as well time interval used identify reinfections. This study describes frequency of reinfections in Norway using different intervals assesses potential factors that could impact risk during variant waves. Methods We linked individual-level data from national registries conduct a retrospective cohort including all cases with positive test...
Between October and December 2018, several clinicians in Norway reported an increase scabies diagnoses. We compared data from the Norwegian Syndromic Surveillance System on medical consultations for mite infestations with treatment sales to investigate this increase. From 2013 of treatments had almost increased by threefold, particularly affecting young adults 15-29 years. recommend awareness among ensure timely diagnosis treatment.
Abstract Background COVID-19 vaccination was recommended for adolescents in Norway since August 2021. In this population-based cohort study, we estimated the BNT162b2 vaccine effectiveness against any PCR-confirmed (symptomatic or not) SARS-CoV-2 infections caused by Delta and Omicron variant among (12-17-years-old) from 2021 to January 2022. Methods Using Cox proportional hazard models, infections. Vaccine status included as a time-varying covariate models were adjusted age, sex,...
Abstract Background During the COVID-19 pandemic, many countries adopted social distance measures and lockdowns of varying strictness. Social contact patterns are essential in driving spread respiratory infections, country-specific measurements needed. This study aimed to gain insights into changes contacts behaviour during early pandemic phase Norway. Methods We conducted an online panel among a nationally representative sample Norwegian adults by age gender. The included six data...
Background: Many countries reported missing and atypical influenza RSV seasons during the COVID-19 pandemic. Here we describe incidence seasonality of COVID-19, influenza, hospitalizations in Norway between 2017-2024, disease burden 2022-2024. Methods: Using nationwide data on ICD-10 discharge codes, procedure codes laboratory results, calculate hospitalizations, by age group, week season January 2017 to April 2024, report proportions receiving intensive care, proportion deaths length stay...
This study investigates a nationwide Salmonella outbreak in Norway during October-December 2024 involving four different serovars-S. Newport, S. Typhimurium, Kisarawe, and Kinondoni. The investigation aimed to assess the outbreak's scope, identify source, implement control measures. Epidemiological analyses included trawling targeted questionnaires, matched case-control study, grocery receipt analysis. Whole-genome sequencing (WGS) determined genetic links between isolates from human cases,...
Leishmaniasis is endemic and mandatorily notifiable in Greece. Epidemiological surveillance data for leishmaniasis Greece between 1981 2011 are presented. In 1998, the notification system began distinguishing visceral cutaneous leishmaniasis. The mean annual incidence of reported cases 1998 was 0.36 per 100,000 population. Of a total 563 after 523 (93%) were cases. Incidence fluctuated during this period, generally decreasing 2007, with small re-increase 2011. rate significantly higher less...
Leishmaniasis is endemic and mandatorily notifiable in Greece. Epidemiological surveillance data for leishmaniasis Greece between 1981 2011 are presented. In 1998, the notification system began distinguishing visceral cutaneous leishmaniasis. The mean annual incidence of reported cases 1998 was 0.36 per 100,000 population. Of a total 563 after 523 (93%) were cases. Incidence fluctuated during this period, generally decreasing 2007, with small re-increase 2011. rate significantly higher less...
From 6 September 2015-May 2016, a large mumps outbreak occurred among vaccinated students in Norway. A case was defined as person presenting with clinical infection, notified between 1 2015 and 30 June 2016. Confirmed cases had positive laboratory confirmation probable an epidemiological link; PCR-positive specimens were genotyped. total of 232 (230 confirmed) median age 23 years (range 4-81) 61% male. Of 68 (30%) confirmed that genotyped, 66 genotype G associated the outbreak. Cases...
Using individual-level national registry data, we conducted a cohort study to estimate differences in the length of hospital stay, and risk admission an intensive care unit in-hospital death among patients infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Omicron variant, compared Delta variant Norway. We included 409 (38%) 666 (62%) who were hospitalised disease 2019 (COVID-19) as main cause hospitalisation between 6 December 2021 February 2022. had 48% lower...
We analysed hepatitis A (HepA) notifications and hospitalisations in Italy, the Netherlands, Norway, Spain, Sweden for available periods between 1995 2014. aimed to investigate whether decreasing HepA incidence is associated with increasing age at infection worsening presentation identify groups risk of severe disease.We performed a retrospective cohort study including 36 734 notified 849 hospitalised patients. used negative binomial regressions over time: i) trends hospitalisation...