Valtýr Thors

708 total citations · 1 hit paper
36 papers, 367 citations indexed

About

Valtýr Thors is a scholar working on Epidemiology, Public Health, Environmental and Occupational Health and Infectious Diseases. According to data from OpenAlex, Valtýr Thors has authored 36 papers receiving a total of 367 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Epidemiology, 9 papers in Public Health, Environmental and Occupational Health and 8 papers in Infectious Diseases. Recurrent topics in Valtýr Thors's work include Pneumonia and Respiratory Infections (12 papers), Respiratory viral infections research (8 papers) and Bacterial Infections and Vaccines (7 papers). Valtýr Thors is often cited by papers focused on Pneumonia and Respiratory Infections (12 papers), Respiratory viral infections research (8 papers) and Bacterial Infections and Vaccines (7 papers). Valtýr Thors collaborates with scholars based in Iceland, United Kingdom and United States. Valtýr Thors's co-authors include Adam Finn, Begonia Morales‐Aza, Peter Muir, Ásgeir Haraldsson, Ian B. Vipond, Jean‐Sébastien Casalegno, Uy Hoang, Anne Teirlinck, Jojanneke van Summeren and Bruno Lina and has published in prestigious journals such as PLoS ONE, American Journal of Respiratory and Critical Care Medicine and PEDIATRICS.

In The Last Decade

Valtýr Thors

31 papers receiving 360 citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Low levels of respiratory syncytial virus activity in Europe during the 2020/21 season: what can we expect in the coming summer and autumn/winter?

2021 146 citations Jojanneke van Summeren, Adam Meijer et al. Eurosurveillance profile →

Peers

Valtýr Thors

EPIDE

PRM

MICRO

SURGE

Agron Plevneshi Canada

Rosanel Amaro Spain

Kathleen A. Woodin United States

Helen Hill United Kingdom

Susanna Hernández‐Bou Spain

M. Farley United States

Heng Tang China

Ezra Olatunde Ogundare Nigeria

A. Madhi South Africa

F Chiodo Italy

Agron Plevneshi Canada

Valtýr Thors

516 ×2.0

EPIDE

145 ×1.5

39 ×0.4

PRM

41 ×0.7

MICRO

24 ×0.6

SURGE

Citations per year, relative to Valtýr Thors Valtýr Thors (= 1×) peers Agron Plevneshi

Countries citing papers authored by Valtýr Thors

Since Specialization

Citations

This map shows the geographic impact of Valtýr Thors's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Valtýr Thors with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Valtýr Thors more than expected).

Fields of papers citing papers by Valtýr Thors

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Valtýr Thors. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Valtýr Thors. The network helps show where Valtýr Thors may publish in the future.

Co-authorship network of co-authors of Valtýr Thors

This figure shows the co-authorship network connecting the top 25 collaborators of Valtýr Thors. A scholar is included among the top collaborators of Valtýr Thors based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Valtýr Thors. Valtýr Thors is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Erlendsdóttir, Helga, Karl G. Kristinsson, Ásgeir Haraldsson, et al.. (2025). A Striking Increase in Carriage Among Young Children in Iceland Paralleled the Unprecedented Increase of Invasive Group A Streptococcal Infection From 2022 to 2023. The Pediatric Infectious Disease Journal. 44(7). 616–621.

Haraldsson, Ásgeir, et al.. (2025). Infant Antibiotic Exposure Is Associated With Increased Risk of Later Childhood Infections, Antibiotic Use and Asthma. The Pediatric Infectious Disease Journal. 44(10). 949–954.

Haraldsson, Ásgeir, et al.. (2024). Influenza vaccination in pregnant women in Iceland 2010–2020 and the burden of influenza in pregnant women and their infants. Vaccine. 42(8). 2051–2058.

Saxén, Harri, Olof Hertting, Emma Malchau Carlsen, et al.. (2024). Early-onset group B streptococcal infections in five Nordic countries with different prevention policies, 1995 to 2019. Eurosurveillance. 29(3). 5 indexed citations

Þórkelsson, Þórður, et al.. (2024). Improved use of antibiotics following implementation of antimicrobial stewardship in a neonatal intensive care unit. Infection Control and Hospital Epidemiology. 45(12). 1448–1454.

Björnsdóttir, Bryndís, et al.. (2023). Febrile Children with Pneumonia Have Higher Nasopharyngeal Bacterial Load Than Other Children with Fever. Pathogens. 12(4). 517–517. 1 indexed citations

Thors, Valtýr, et al.. (2022). Simplified antibiotic treatment for paediatric osteoarticular infections achieved good outcomes. Acta Paediatrica. 111(11). 2188–2194. 2 indexed citations

Summeren, Jojanneke van, Adam Meijer, Guðrún Aspelund, et al.. (2021). Low levels of respiratory syncytial virus activity in Europe during the 2020/21 season: what can we expect in the coming summer and autumn/winter?. Eurosurveillance. 26(29). 146 indexed citations breakdown →

Thors, Valtýr, et al.. (2021). Decreasing death rates and causes of death in Icelandic children—A longitudinal analysis. PLoS ONE. 16(9). e0257536–e0257536. 1 indexed citations

10.

Haraldsson, Ásgeir, et al.. (2021). Burden of rotavirus disease in young children in Iceland – Time to vaccinate?. Vaccine. 39(38). 5422–5427. 1 indexed citations

11.

Erlendsdóttir, Helga, et al.. (2021). Native joint infections in Iceland 2003–2017: an increase in postarthroscopic infections. Annals of the Rheumatic Diseases. 81(1). 132–139. 11 indexed citations

12.

Thors, Valtýr, Hannah Christensen, Begonia Morales‐Aza, et al.. (2016). The Effects of Live Attenuated Influenza Vaccine on Nasopharyngeal Bacteria in Healthy 2 to 4 Year Olds: A Randomized Controlled Trial. American Journal of Respiratory and Critical Care Medicine. 193(12). 1401–1409. 33 indexed citations

13.

Finn, Adam, Begonia Morales‐Aza, Matko Marlais, et al.. (2016). Density Distribution of Pharyngeal Carriage of Meningococcus in Healthy Young Adults. The Pediatric Infectious Disease Journal. 35(10). 1080–1085. 14 indexed citations

14.

Rodrigues, Fernanda, León Danon, Begonia Morales‐Aza, et al.. (2016). Pneumococcal Serotypes Colonise the Nasopharynx in Children at Different Densities. PLoS ONE. 11(9). e0163435–e0163435. 10 indexed citations

15.

Thors, Valtýr, Begonia Morales‐Aza, Grace R. Pidwill, et al.. (2015). Population density profiles of nasopharyngeal carriage of 5 bacterial species in pre-school children measured using quantitative PCR offer potential insights into the dynamics of transmission. Human Vaccines & Immunotherapeutics. 12(2). 375–382. 23 indexed citations

16.

Thors, Valtýr, Geoffrey B. Smith, & Adam Finn. (2013). Should all children be immunised against influenza?. Archives of Disease in Childhood. 98(11). 846–849. 7 indexed citations

17.

Árnason, Sigurður, Valtýr Thors, Þórólfur Guðnason, Karl G. Kristinsson, & Ásgeir Haraldsson. (2010). Bacteraemia in children in Iceland 1994–2005. Acta Paediatrica. 99(10). 1531–1535. 5 indexed citations

18.

Thors, Valtýr, Marc Bierings, Willem J. G. Melchers, Paul E. Verweij, & Tom F.W. Wolfs. (2010). PULMONARY ASPERGILLOSIS CAUSED BY A PAN-AZOLE-RESISTANT ASPERGILLUS FUMIGATUS IN A 10-YEAR-OLD BOY. The Pediatric Infectious Disease Journal. 30(3). 268–270. 11 indexed citations

19.

Thors, Valtýr, et al.. (2005). Increased Frequency of C4B*Q0 Alleles in Patients with Henoch–Schönlein Purpura. Scandinavian Journal of Immunology. 61(3). 274–278. 25 indexed citations

20.

Thors, Valtýr, et al.. (2004). The effect of dietary fish oil on survival after infection with Klebsiella pneumoniae or Streptococcus pneumoniae. Scandinavian Journal of Infectious Diseases. 36(2). 102–105. 8 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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