Halvor Sommerfelt

11.7k total citations
136 papers, 4.4k citations indexed

About

Halvor Sommerfelt is a scholar working on Nutrition and Dietetics, Infectious Diseases and Endocrinology. According to data from OpenAlex, Halvor Sommerfelt has authored 136 papers receiving a total of 4.4k indexed citations (citations by other indexed papers that have themselves been cited), including 53 papers in Nutrition and Dietetics, 40 papers in Infectious Diseases and 38 papers in Endocrinology. Recurrent topics in Halvor Sommerfelt's work include Child Nutrition and Water Access (44 papers), Escherichia coli research studies (37 papers) and Viral gastroenteritis research and epidemiology (36 papers). Halvor Sommerfelt is often cited by papers focused on Child Nutrition and Water Access (44 papers), Escherichia coli research studies (37 papers) and Viral gastroenteritis research and epidemiology (36 papers). Halvor Sommerfelt collaborates with scholars based in Norway, India and Denmark. Halvor Sommerfelt's co-authors include Tor A. Strand, Hans Steinsland, Nita Bhandari, Palle Valentiner‐Branth, Kåre Mølbak, Thorkild Tylleskär, Rajiv Bahl, Sunita Taneja, James Tumwine and Victoria Nankabirwa and has published in prestigious journals such as The Lancet, PLoS ONE and American Journal of Clinical Nutrition.

In The Last Decade

Halvor Sommerfelt

135 papers receiving 4.2k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Halvor Sommerfelt Norway	41	1.5k	1.4k	1.2k	801	738	136	4.4k
Christa L. Fischer Walker United States	30	2.1k 1.4×	2.5k 1.8×	643 0.6×	1.1k 1.3×	1.4k 2.0×	54	5.8k
Anita K. M. Zaidi Pakistan	33	1.1k 0.7×	1.2k 0.8×	556 0.5×	1.2k 1.5×	1.6k 2.1×	93	4.9k
Dilip Mahalanabis Bangladesh	38	1.6k 1.0×	2.4k 1.7×	727 0.6×	454 0.6×	415 0.6×	188	4.8k
Samir K. Saha Bangladesh	43	928 0.6×	1.1k 0.8×	527 0.5×	1.6k 2.0×	2.4k 3.2×	243	6.4k
Sunil Sazawal United States	40	1.5k 1.0×	3.8k 2.6×	646 0.6×	991 1.2×	682 0.9×	98	6.8k
Theresa J. Ochoa Peru	37	1.7k 1.1×	1.1k 0.8×	1.5k 1.3×	314 0.4×	732 1.0×	185	4.3k
James A. Berkley Kenya	50	1.9k 1.3×	3.1k 2.2×	454 0.4×	2.0k 2.5×	2.1k 2.9×	237	9.2k
Michael L. Bennish United States	32	1.8k 1.2×	681 0.5×	944 0.8×	299 0.4×	728 1.0×	65	3.7k
Vũ Đình Thiểm Vietnam	28	1.3k 0.8×	384 0.3×	884 0.8×	202 0.3×	752 1.0×	79	3.0k
Khalequ Zaman Bangladesh	34	1.6k 1.1×	481 0.3×	576 0.5×	165 0.2×	1.0k 1.4×	136	3.4k

Countries citing papers authored by Halvor Sommerfelt

Since Specialization

Citations

This map shows the geographic impact of Halvor Sommerfelt'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 Halvor Sommerfelt with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Halvor Sommerfelt more than expected).

Fields of papers citing papers by Halvor Sommerfelt

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Halvor Sommerfelt. 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 Halvor Sommerfelt. The network helps show where Halvor Sommerfelt may publish in the future.

Co-authorship network of co-authors of Halvor Sommerfelt

This figure shows the co-authorship network connecting the top 25 collaborators of Halvor Sommerfelt. A scholar is included among the top collaborators of Halvor Sommerfelt 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 Halvor Sommerfelt. Halvor Sommerfelt is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Cantrell, Liberty, Stephen Cose, Bridget Freyne, et al.. (2024). Seroepidemiology of SARS-CoV-2 in a cohort of pregnant women and their infants in Uganda and Malawi. PLoS ONE. 19(3). e0290913–e0290913. 1 indexed citations

Steinsland, Hans, et al.. (2023). Strong Association between Diarrhea and Concentration of Enterotoxigenic Escherichia coli Strain TW10722 in Stools of Experimentally Infected Volunteers. Pathogens. 12(2). 283–283. 3 indexed citations

Choudhary, Tarun Shankar, Sarmila Mazumder, Øystein Ariansen Haaland, et al.. (2022). Effect of kangaroo mother care initiated in community settings on financial risk protection of low-income households: a randomised controlled trial in Haryana, India. BMJ Global Health. 7(11). e010000–e010000. 2 indexed citations

Sinha, Bireshwar, Halvor Sommerfelt, Per Ashorn, et al.. (2022). Effect of community‐initiated kangaroo mother care on breastfeeding performance in low birthweight infants: A randomized clinical trial. Maternal and Child Nutrition. 18(4). e13419–e13419. 6 indexed citations

Nankabirwa, Victoria, Thorkild Tylleskär, James Tumwine, et al.. (2017). Efficacy of umbilical cord cleansing with a single application of 4% chlorhexidine for the prevention of newborn infections in Uganda: study protocol for a randomized controlled trial. Trials. 18(1). 322–322. 12 indexed citations

Arora, Ananya, Tor A. Strand, Halvor Sommerfelt, et al.. (2017). Predictors of death in infants with probable serious bacterial infection. Pediatric Research. 83(4). 784–790. 3 indexed citations

Fadnes, Lars Thore, Victoria Nankabirwa, Ingunn Marie Stadskleiv Engebretsen, et al.. (2016). Effects of an exclusive breastfeeding intervention for six months on growth patterns of 4–5 year old children in Uganda: the cluster-randomised PROMISE EBF trial. BMC Public Health. 16(1). 555–555. 20 indexed citations

Rongsen‐Chandola, Temsunaro, Tor A. Strand, Nidhi Goyal, et al.. (2014). Effect of withholding breastfeeding on the immune response to a live oral rotavirus vaccine in North Indian infants. Vaccine. 32. A134–A139. 59 indexed citations

Engebretsen, Ingunn Marie Stadskleiv, Jolly Nankunda, Victoria Nankabirwa, et al.. (2013). Early Infant Feeding Practices In The Promise-Ebf Trial : Promotion Of Exclusive Breastfeeding By Peer Counsellors In Three Countries In Africa. Annals of Nutrition and Metabolism. 63. 709–709. 3 indexed citations

10.

Strand, Tor A., Sunita Taneja, Per Magne Ueland, et al.. (2013). Cobalamin and folate status predicts mental development scores in North Indian children 12–18 mo of age. American Journal of Clinical Nutrition. 97(2). 310–317. 80 indexed citations

11.

Mathisen, Maria, Sudha Basnet, Arun Kumar Sharma, et al.. (2011). RNA Viruses in Young Nepalese Children Hospitalized With Severe Pneumonia. The Pediatric Infectious Disease Journal. 30(12). 1032–1036. 19 indexed citations

12.

Manger, Mari S., Tor A. Strand, Sunita Taneja, et al.. (2011). Cobalamin Status Modifies the Effect of Zinc Supplementation on the Incidence of Prolonged Diarrhea in 6- to 30-Month-Old North Indian Children. Journal of Nutrition. 141(6). 1108–1113. 6 indexed citations

13.

Fadnes, Lars Thore, Victoria Nankabirwa, Halvor Sommerfelt, et al.. (2011). Is vaccination coverage a good indicator of age-appropriate vaccination? A prospective study from Uganda. Vaccine. 29(19). 3564–3570. 79 indexed citations

14.

Chandyo, Ram K., Prakash Shrestha, Palle Valentiner‐Branth, et al.. (2010). Two Weeks of Zinc Administration to Nepalese Children with Pneumonia Does Not Reduce the Incidence of Pneumonia or Diarrhea during the Next Six Months. Journal of Nutrition. 140(9). 1677–1682. 18 indexed citations

15.

Strand, Tor A., Ramesh Adhikari, Ram Chandyo, Pushpa Raj Sharma, & Halvor Sommerfelt. (2004). Predictors of plasma zinc concentrations in children with acute diarrhea. American Journal of Clinical Nutrition. 79(3). 451–456. 38 indexed citations

16.

Fischer, Thea Kølsen, Nicola Page, Dixie D. Griffin, et al.. (2003). Characterization of incompletely typed rotavirus strains from Guinea-Bissau: identification of G8 and G9 types and a high frequency of mixed infections. Virology. 311(1). 125–133. 56 indexed citations

17.

Steinsland, Hans, Palle Valentiner‐Branth, Michael Perch, et al.. (2002). EnterotoxigenicEscherichia coliInfections and Diarrhea in a Cohort of Young Children in Guinea‐Bissau. The Journal of Infectious Diseases. 186(12). 1740–1747. 82 indexed citations

18.

Gaastra, Wim, Halvor Sommerfelt, Linda van Dijk, et al.. (2002). Antigenic variation within the subunit protein of members of the colonization factor antigen I group of fimbrial proteins in human enterotoxigenic Escherichia coli. International Journal of Medical Microbiology. 292(1). 43–50. 20 indexed citations

19.

Bhan, M. K., Halvor Sommerfelt, & Tor A. Strand. (2001). Micronutrient deficiency in children. British Journal Of Nutrition. 85(S2). S199–S203. 45 indexed citations

20.

Bhan, Maharaj Kishan, et al.. (1989). Enteroaggregative Escherichia coli and Salmonella associated with nondysenteric persistent diarrhea. The Pediatric Infectious Disease Journal. 8(8). 499–501. 83 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.

Explore authors with similar magnitude of impact