Sammy M. Njenga

6.5k total citations · 2 hit papers
138 papers, 3.6k citations indexed

About

Sammy M. Njenga is a scholar working on Parasitology, Infectious Diseases and Pediatrics, Perinatology and Child Health. According to data from OpenAlex, Sammy M. Njenga has authored 138 papers receiving a total of 3.6k indexed citations (citations by other indexed papers that have themselves been cited), including 80 papers in Parasitology, 48 papers in Infectious Diseases and 46 papers in Pediatrics, Perinatology and Child Health. Recurrent topics in Sammy M. Njenga's work include Parasites and Host Interactions (79 papers), Global Maternal and Child Health (45 papers) and Child Nutrition and Water Access (42 papers). Sammy M. Njenga is often cited by papers focused on Parasites and Host Interactions (79 papers), Global Maternal and Child Health (45 papers) and Child Nutrition and Water Access (42 papers). Sammy M. Njenga collaborates with scholars based in Kenya, United States and United Kingdom. Sammy M. Njenga's co-authors include Charles Mwandawiro, Noboru Minakawa, Amy J. Pickering, Gabriel O. Dida, George Sonye, Jimmy Kihara, Clair Null, Collins Okoyo, Benjamin F. Arnold and Simon Brooker and has published in prestigious journals such as Proceedings of the National Academy of Sciences, The Lancet and Nature Communications.

In The Last Decade

Sammy M. Njenga

135 papers receiving 3.5k citations

Hit Papers

align trajectories sort by overperformance

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.

Effects of water quality, sanitation, handwashing, and nutritional interventions on diarrhoea and child growth in rural Kenya: a cluster-randomised controlled trial

2018 385 citations Clair Null, Christine P. Stewart et al. profile →
The WASH Benefits and SHINE trials: interpretation of WASH intervention effects on linear growth and diarrhoea

2019 230 citations Amy J. Pickering, Clair Null et al. profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Sammy M. Njenga Kenya	32	1.7k	1.2k	1.0k	907	827	138	3.6k
Helen Guyatt United Kingdom	38	2.0k 1.2×	898 0.7×	1.6k 1.6×	1.4k 1.6×	823 1.0×	82	4.2k
Andrés G. Lescano Peru	40	1.3k 0.8×	766 0.6×	1.8k 1.7×	412 0.5×	1.1k 1.3×	163	5.3k
Rachel L. Pullan United Kingdom	34	3.0k 1.8×	1.9k 1.5×	1.0k 1.0×	1.2k 1.4×	1.0k 1.2×	101	5.8k
Robert Bos Switzerland	14	1.9k 1.1×	1.0k 0.8×	736 0.7×	885 1.0×	318 0.4×	23	3.4k
Berhanu Erko Ethiopia	39	2.8k 1.7×	1.1k 0.9×	1.1k 1.1×	1.2k 1.4×	486 0.6×	157	4.2k
Theresa W. Gyorkos Canada	33	1.7k 1.1×	1.0k 0.8×	592 0.6×	924 1.0×	579 0.7×	114	4.0k
Giovanna Raso Switzerland	36	2.7k 1.6×	1.0k 0.9×	1.1k 1.1×	1.6k 1.8×	359 0.4×	79	3.8k
Darren J. Gray Australia	43	3.6k 2.2×	1.0k 0.8×	1.2k 1.2×	1.3k 1.4×	925 1.1×	170	5.6k
Takafira Mduluza Zimbabwe	37	2.5k 1.5×	638 0.5×	907 0.9×	1.1k 1.3×	455 0.6×	155	3.6k
Judd L. Walson United States	32	878 0.5×	1.0k 0.8×	387 0.4×	644 0.7×	978 1.2×	196	3.1k

Countries citing papers authored by Sammy M. Njenga

Since Specialization

Citations

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

Fields of papers citing papers by Sammy M. Njenga

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sammy M. Njenga. 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 Sammy M. Njenga. The network helps show where Sammy M. Njenga may publish in the future.

Co-authorship network of co-authors of Sammy M. Njenga

This figure shows the co-authorship network connecting the top 25 collaborators of Sammy M. Njenga. A scholar is included among the top collaborators of Sammy M. Njenga 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 Sammy M. Njenga. Sammy M. Njenga 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

Mwinzi, Pauline N. M., Khadime Sylla, Maurice R. Odiere, et al.. (2025). Priority knowledge gaps for schistosomiasis research and development in the World Health Organization Africa Region. Infectious Diseases of Poverty. 14(1). 19–19. 3 indexed citations

Fuhrmeister, Erica R., et al.. (2025). Context-Seq: CRISPR-Cas9 targeted nanopore sequencing for transmission dynamics of antimicrobial resistance. Nature Communications. 16(1). 5898–5898. 1 indexed citations

Touloupou, Panayiota, Claudio Fronterrè, Jorge Cano, et al.. (2024). An Ensemble Framework for Projecting the Impact of Lymphatic Filariasis Interventions Across Sub-Saharan Africa at a Fine Spatial Scale. Clinical Infectious Diseases. 78(Supplement_2). S108–S116. 3 indexed citations

Arnold, Benjamin F., Christine Tedijanto, Sammy M. Njenga, et al.. (2024). Geographic pair matching in large-scale cluster randomized trials. Nature Communications. 15(1). 1069–1069. 2 indexed citations

Gachohi, John, et al.. (2024). A qualitative assessment of community perceptions and practices towards schistosomiasis prior to introduction of a potential novel treatment option for preschool-age children in Kenya. SHILAP Revista de lepidopterología. 5. 3 indexed citations

Njenga, Sammy M., Collins Okoyo, Cassian Mwatele, et al.. (2024). Triple-drug therapy with ivermectin, diethylcarbamazine and albendazole for the acceleration of lymphatic filariasis elimination in Kenya: Programmatic implementation and results of the first impact assessment. PLoS neglected tropical diseases. 18(7). e0011942–e0011942. 1 indexed citations

Kepha, Stella, Sammy M. Njenga, Jimmy Kihara, et al.. (2023). Precision mapping of schistosomiasis and soil-transmitted helminthiasis among school age children at the coastal region, Kenya. PLoS neglected tropical diseases. 17(1). e0011043–e0011043. 13 indexed citations

Okoyo, Collins, et al.. (2023). Understanding factors responsible for the slow decline of soil-transmitted helminthiasis following seven rounds of annual mass drug administration (2012–2018) among school children in endemic counties of Kenya: A mixed method study. PLoS neglected tropical diseases. 17(5). e0011310–e0011310. 4 indexed citations

Oluka, Margaret, et al.. (2023). Comparative Safety Surveillance of Triple (IDA) Versus Dual Therapy (DA) in Mass Drug Administration for Elimination of Lymphatic Filariasis in Kenya: A Cohort Event Monitoring Study. Drug Safety. 46(10). 961–974. 4 indexed citations

10.

Collyer, Benjamin, James E. Truscott, Charles Mwandawiro, Sammy M. Njenga, & Roy M. Anderson. (2023). How important is the spatial movement of people in attempts to eliminate the transmission of human helminth infections by mass drug administration?. Philosophical Transactions of the Royal Society B Biological Sciences. 378(1887). 20220273–20220273. 5 indexed citations

11.

Njenga, Sammy M., Henry Kanyi, Cassian Mwatele, et al.. (2022). Integrated survey of helminthic neglected tropical diseases and comparison of two mosquito sampling methods for lymphatic filariasis molecular xenomonitoring in the River Galana area, Kilifi County, coastal Kenya. PLoS ONE. 17(12). e0278655–e0278655. 7 indexed citations

12.

Okoyo, Collins, Paul M. Gichuki, Cassian Mwatele, et al.. (2021). Comparison of quantitative polymerase chain reaction, Kato-Katz and circulating cathodic antigen rapid test for the diagnosis of Schistosoma mansoni infection: A cross-sectional study in Kirinyaga County, Kenya. SHILAP Revista de lepidopterología. 1. 100029–100029. 4 indexed citations

13.

Won, Kimberly Y., Katherine Gass, Marco A. Biamonte, et al.. (2021). Diagnostics to support elimination of lymphatic filariasis—Development of two target product profiles. PLoS neglected tropical diseases. 15(11). e0009968–e0009968. 13 indexed citations

14.

Matendechero, Sultani, et al.. (2021). Safety and Tolerability of Mass Diethylcarbamazine and Albendazole Administration for the Elimination of Lymphatic Filariasis in Kenya: An Active Surveillance Study. Pharmaceuticals. 14(3). 264–264. 8 indexed citations

15.

Nadimpalli, Maya, Sara Marks, María Camila Montealegre, et al.. (2020). Urban informal settlements as hotspots of antimicrobial resistance and the need to curb environmental transmission. Nature Microbiology. 5(6). 787–795. 140 indexed citations

16.

Tanaka, Mio, et al.. (2020). Prevalence and risk factors of Schistosoma mansoni infection among children under two years of age in Mbita, Western Kenya. PLoS neglected tropical diseases. 14(8). e0008473–e0008473. 11 indexed citations

17.

Arnold, Benjamin F., Henry Kanyi, Sammy M. Njenga, et al.. (2020). Fine-scale heterogeneity in Schistosoma mansoni force of infection measured through antibody response. Proceedings of the National Academy of Sciences. 117(37). 23174–23181. 15 indexed citations

18.

Kimura, Daisuke, Bao Lam, Risa Nakamura, et al.. (2018). Modulation of immune responses by Plasmodium falciparum infection in asymptomatic children living in the endemic region of Mbita, western Kenya. Parasitology International. 67(3). 284–293. 7 indexed citations

19.

Byrd, Kendra, Thomas N. Williams, Audrie Lin, et al.. (2018). Sickle Cell and α+-Thalassemia Traits Influence the Association between Ferritin and Hepcidin in Rural Kenyan Children Aged 14–26 Months. Journal of Nutrition. 148(12). 1903–1910. 5 indexed citations

20.

Kariuki, Thomas, Richard Odame Phillips, Sammy M. Njenga, et al.. (2011). Research and Capacity Building for Control of Neglected Tropical Diseases: The Need for a Different Approach. PLoS neglected tropical diseases. 5(5). e1020–e1020. 15 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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