Manju Varma

2.4k total citations
27 papers, 1.8k citations indexed

About

Manju Varma is a scholar working on Water Science and Technology, Health, Toxicology and Mutagenesis and Environmental Engineering. According to data from OpenAlex, Manju Varma has authored 27 papers receiving a total of 1.8k indexed citations (citations by other indexed papers that have themselves been cited), including 19 papers in Water Science and Technology, 9 papers in Health, Toxicology and Mutagenesis and 8 papers in Environmental Engineering. Recurrent topics in Manju Varma's work include Fecal contamination and water quality (19 papers), Groundwater flow and contamination studies (8 papers) and Environmental Justice and Health Disparities (6 papers). Manju Varma is often cited by papers focused on Fecal contamination and water quality (19 papers), Groundwater flow and contamination studies (8 papers) and Environmental Justice and Health Disparities (6 papers). Manju Varma collaborates with scholars based in United States, Canada and Ghana. Manju Varma's co-authors include Richard A. Haugland, Mano Sivaganesan, Larry Wymer, Orin C. Shanks, Catherine A. Kelty, Stephen Vesper, Shawn Siefring, Lindsay Peed, Karen M. White and William A. Walters and has published in prestigious journals such as Environmental Science & Technology, Applied and Environmental Microbiology and Water Research.

In The Last Decade

Manju Varma

27 papers receiving 1.8k citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Manju Varma United States	21	986	588	394	255	250	27	1.8k
Kristen P. Brenner United States	21	1.4k 1.5×	721 1.2×	433 1.1×	307 1.2×	307 1.2×	28	2.2k
Yiping Cao United States	24	953 1.0×	368 0.6×	367 0.9×	174 0.7×	207 0.8×	41	1.6k
Elizabeth Sams United States	18	954 1.0×	531 0.9×	340 0.9×	257 1.0×	201 0.8×	34	1.5k
Troy M. Scott United States	13	1.3k 1.3×	357 0.6×	328 0.8×	182 0.7×	567 2.3×	22	2.0k
Sarah P. Walters United States	13	848 0.9×	214 0.4×	257 0.7×	169 0.7×	211 0.8×	15	1.2k
John E. Whitlock United States	8	873 0.9×	276 0.5×	277 0.7×	101 0.4×	154 0.6×	8	1.3k
Cheryl M. Davies Australia	23	1.0k 1.0×	445 0.8×	384 1.0×	94 0.4×	167 0.7×	48	1.9k
Roger S. Fujioka United States	28	1.2k 1.3×	484 0.8×	326 0.8×	171 0.7×	392 1.6×	74	2.3k
Mano Sivaganesan United States	29	1.8k 1.8×	751 1.3×	769 2.0×	397 1.6×	458 1.8×	62	2.8k
Jerzy Łukasik United States	18	1.5k 1.6×	426 0.7×	450 1.1×	182 0.7×	631 2.5×	27	2.5k

Countries citing papers authored by Manju Varma

Since Specialization

Citations

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

Fields of papers citing papers by Manju Varma

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Manju Varma

This figure shows the co-authorship network connecting the top 25 collaborators of Manju Varma. A scholar is included among the top collaborators of Manju Varma 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 Manju Varma. Manju Varma 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

Keely, Scott P., Nichole E. Brinkman, Michael A. Jahne, et al.. (2022). Geospatial Patterns of Antimicrobial Resistance Genes in the US EPA National Rivers and Streams Assessment Survey. Environmental Science & Technology. 56(21). 14960–14971. 28 indexed citations

Haugland, Richard A., Kevin H. Oshima, Mano Sivaganesan, et al.. (2021). Large-scale comparison of E. coli levels determined by culture and a qPCR method (EPA Draft Method C) in Michigan towards the implementation of rapid, multi-site beach testing. Journal of Microbiological Methods. 184. 106186–106186. 9 indexed citations

Sivaganesan, Mano, Manju Varma, Shawn Siefring, & Richard A. Haugland. (2018). Quantification of plasmid DNA standards for U.S. EPA fecal indicator bacteria qPCR methods by droplet digital PCR analysis. Journal of Microbiological Methods. 152. 135–142. 12 indexed citations

Napier, Melanie, Richard A. Haugland, Alfred Dufour, et al.. (2017). Exposure to human-associated fecal indicators and self-reported illness among swimmers at recreational beaches: a cohort study. Environmental Health. 16(1). 103–103. 26 indexed citations

Haugland, Richard A., Shawn Siefring, Manju Varma, et al.. (2016). Multi-laboratory survey of qPCR enterococci analysis method performance in U.S. coastal and inland surface waters. Journal of Microbiological Methods. 123. 114–125. 16 indexed citations

Doolittle, Mark M., et al.. (2015). Development and evaluation of a culture-independent method for source determination of fecal wastes in surface and storm waters using reverse transcriptase-PCR detection of FRNA coliphage genogroup gene sequences. Journal of Microbiological Methods. 112. 28–35. 4 indexed citations

Haugland, Richard A., Shawn Siefring, Manju Varma, et al.. (2014). Standardization of enterococci density estimates by EPA qPCR methods and comparison of beach action value exceedances in river waters with culture methods. Journal of Microbiological Methods. 105. 59–66. 27 indexed citations

Siefring, Shawn, et al.. (2014). Comparison of Enterococcus quantitative polymerase chain reaction analysis results from Midwest U.S. river samples using EPA Method 1611 and Method 1609 PCR reagents. Journal of Microbiological Methods. 101. 9–17. 8 indexed citations

Varma, Manju, et al.. (2012). Comparison of Enterococcus quantitative polymerase chain reaction analysis results from fresh and marine waters on two real-time instruments. Analytical Biochemistry. 430(1). 68–74. 7 indexed citations

10.

Haugland, Richard A., et al.. (2012). Influences of sample interference and interference controls on quantification of enterococci fecal indicator bacteria in surface water samples by the qPCR method. Water Research. 46(18). 5989–6001. 41 indexed citations

11.

Sivaganesan, Mano, Shawn Siefring, Manju Varma, & Richard A. Haugland. (2011). MPN estimation of qPCR target sequence recoveries from whole cell calibrator samples. Journal of Microbiological Methods. 87(3). 343–349. 24 indexed citations

12.

Haugland, Richard A., Manju Varma, Mano Sivaganesan, et al.. (2010). Evaluation of genetic markers from the 16S rRNA gene V2 region for use in quantitative detection of selected Bacteroidales species and human fecal waste by qPCR. Systematic and Applied Microbiology. 33(6). 348–357. 192 indexed citations

13.

Shanks, Orin C., Karen M. White, Catherine A. Kelty, et al.. (2010). Performance Assessment PCR-Based Assays Targeting Bacteroidales Genetic Markers of Bovine Fecal Pollution. Applied and Environmental Microbiology. 76(5). 1359–1366. 72 indexed citations

14.

Varma, Manju, et al.. (2009). Quantitative real-time PCR analysis of total and propidium monoazide-resistant fecal indicator bacteria in wastewater. Water Research. 43(19). 4790–4801. 122 indexed citations

15.

Sivaganesan, Mano, et al.. (2008). A Bayesian method for calculating real-time quantitative PCR calibration curves using absolute plasmid DNA standards. BMC Bioinformatics. 9(1). 77 indexed citations

16.

Vesper, Stephen, Larry Wymer, Teija Meklin, et al.. (2005). Comparison of populations of mould species in homes in the UK and USA using mould-specific quantitative PCR. Letters in Applied Microbiology. 41(4). 367–373. 49 indexed citations

17.

Vesper, Stephen, et al.. (2004). Quantitative Polymerase Chain Reaction Analysis of Fungi in Dust From Homes of Infants Who Developed Idiopathic Pulmonary Hemorrhaging. Journal of Occupational and Environmental Medicine. 46(6). 596–601. 54 indexed citations

18.

Haugland, Richard A., Manju Varma, Larry Wymer, & Stephen Vesper. (2004). Quantitative PCR Analysis of Selected Aspergillus, Penicillium and Paecilomyces Species. Systematic and Applied Microbiology. 27(2). 198–210. 239 indexed citations

19.

Meklin, Teija, Richard A. Haugland, Tiina Reponen, et al.. (2004). Quantitative PCR analysis of house dust can reveal abnormal mold conditionsThe US Environmental Protection Agency (EPA,) through its Office of Research and Development, partially funded and collaborated in the research described here. It has been subjected to the Agency's peer review and has been approved as an EPA publication. Mention of trade names or commercial products does not constitute endorsement or recommendation by the EPA for use.. Journal of Environmental Monitoring. 6(7). 615–615. 114 indexed citations

20.

Varma, Manju, et al.. (2003). Detection of Cyclospora cayetanensis using a quantitative real-time PCR assay. Journal of Microbiological Methods. 53(1). 27–36. 49 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