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K. Rajakumar · SciRah

Researcher profile · Semantic Scholar

K. Rajakumar

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K. Rajakumar — researcher profile on SciRah

h-index: 24
Works: 49
Citations: 2,605

Most-cited papers

Homologous and Heterologous Covid-19 Booster Vaccinations
R. Atmar, K. Lyke, M. Deming, L. Jackson +34 more
2022New England Journal of Medicine501 citations Open access
Semantic Scholar
Vitamin D, cod-liver oil, sunlight, and rickets: a historical perspective.
K. Rajakumar
2003Pediatrics272 citations
Semantic Scholar
Vitamin D status, adiposity, and lipids in black American and Caucasian children.
K. Rajakumar, J. de las Heras, Tai C. Chen, SoJung Lee +2 more
2011Journal of Clinical Endocrinology and Metabolism183 citations Open access
Semantic Scholar
Rapid decline in vaccine-boosted neutralizing antibodies against SARS-CoV-2 Omicron variant
K. Lyke, R. Atmar, Clara Domínguez Islas, C. Posavad +33 more
2022Cell Reports Medicine160 citations Open access
Semantic Scholar
Vitamin D Status and Response to Vitamin D3 in Obese vs. Non‐obese African American Children
K. Rajakumar, John D. Fernstrom, M. Holick, J. Janosky +1 more
2008Obesity160 citations
Semantic Scholar
SOLAR ultraviolet radiation and vitamin D: a historical perspective.
K. Rajakumar, S. Greenspan, Stephen B. Thomas, M. Holick
2007American Journal of Public Health159 citations Open access
Semantic Scholar
Racial Differences in Parents’ Distrust of Medicine and Research
K. Rajakumar, Stephen B. Thomas, Donald Musa, Donna A. Almario +1 more
2009Archives of Pediatrics & Adolescent Medicine113 citations Open access
Semantic Scholar
Heterologous SARS-CoV-2 Booster Vaccinations – Preliminary Report
R. Atmar, K. Lyke, M. Deming, L. Jackson +33 more
2021medRxiv94 citations Open access
Semantic Scholar
Infantile scurvy: a historical perspective.
K. Rajakumar
2001Pediatrics78 citations Open access
Semantic Scholar
Vitamin D Insufficiency in Preadolescent African-American Children
K. Rajakumar, J. Fernstrom, J. Janosky, S. Greenspan
2005La Clinica pediatrica77 citations
Semantic Scholar
Comparative Study of Clinical Evaluation of Heart Murmurs by General Pediatricians and Pediatric Cardiologists
K. Rajakumar, M. Weisse, A. Rosas, E. Gunel +4 more
1999La Clinica pediatrica75 citations
Semantic Scholar
Reemerging nutritional rickets: a historical perspective.
K. Rajakumar, Stephen B. Thomas
2005Archives of Pediatrics & Adolescent Medicine72 citations
Semantic Scholar
Effect of vitamin D3 supplementation on vascular and metabolic health of vitamin D-deficient overweight and obese children: a randomized clinical trial.
K. Rajakumar, C. Moore, Arshad T. Khalid, A. Vallejo +5 more
2020American Journal of Clinical Nutrition69 citations Open access
Semantic Scholar
Triumph and Tribulations of Pellagra in the United States: A Historical Perspective
K. Rajakumar
1999Southern medical journal (Birmingham, Ala. Print)69 citations
Semantic Scholar
Impact of season and diet on vitamin D status of African American and Caucasian children
K. Rajakumar, M. Holick, K. Jeong, C. Moore +6 more
2011La Clinica pediatrica64 citations Open access
Semantic Scholar
25-Hydroxyvitamin D Concentrations and In Vivo Insulin Sensitivity and β-Cell Function Relative to Insulin Sensitivity in Black and White Youth
K. Rajakumar, J. de las Heras, SoJung Lee, M. Holick +1 more
2012Diabetes Care48 citations Open access
Semantic Scholar
25-Hydroxyvitamin D in Obese Youth Across the Spectrum of Glucose Tolerance From Normal to Prediabetes to Type 2 Diabetes
J. de las Heras, K. Rajakumar, SoJung Lee, F. Bacha +2 more
2013Diabetes Care45 citations Open access
Semantic Scholar
Effect of Vitamin D3 Supplementation in Black and in White Children: A Randomized, Placebo-Controlled Trial.
K. Rajakumar, C. Moore, J. Yabes, Flora Olabopo +8 more
2015Journal of Clinical Endocrinology and Metabolism42 citations Open access
Semantic Scholar
Dosing error with over-the-counter vitamin D supplement: A risk for vitamin D toxicity in infants
K. Rajakumar, E. Reis, M. Holick
2012La Clinica pediatrica42 citations Open access
Semantic Scholar
Identifying Children Likely to Benefit From Antibiotics for Acute Sinusitis: A Randomized Clinical Trial.
N. Shaikh, A. Hoberman, T. Shope, J. Jeong +9 more
2023Journal of the American Medical Association (JAMA)39 citations Open access
Semantic Scholar
Immunogenicity of NVX-CoV2373 heterologous boost against SARS-CoV-2 variants
K. Lyke, R. Atmar, C. D. Domínguez Islas, C. Posavad +69 more
2023npj Vaccines29 citations Open access
Semantic Scholar
The effectiveness of a short food frequency questionnaire in determining vitamin D intake in children
A. Nucci, Caitlin Russell, Rui-Yan Luo, Vijay Ganji +4 more
2013Dermato-Endocrinology27 citations Open access
Semantic Scholar
Promoting Cardiovascular Health in Early Childhood and Transitions in Childhood Through Adolescence: A Workshop Report
Stephen R. Daniels, C. Pratt, E. Hollister, D. Labarthe +22 more
2019Jornal de Pediatria26 citations Open access
Semantic Scholar
Estimations of Dietary Vitamin D Requirements in Black and White Children
K. Rajakumar, C. Moore, J. Yabes, Flora Olabopo +4 more
2016Pediatric Research24 citations Open access
Semantic Scholar
Individual participant data (IPD)-level meta-analysis of randomised controlled trials to estimate the vitamin D dietary requirements in dark-skinned individuals resident at high latitude
K. Cashman, M. Kiely, R. Andersen, Ida M. Grønborg +18 more
2021European Journal of Nutrition23 citations Open access
Semantic Scholar
Utility of Sun-reactive Skin Typing and Melanin Index for Discerning Vitamin D Deficiency
Arshad T. Khalid, C. Moore, Christopher Hall, Flora Olabopo +4 more
2017Pediatric Research22 citations Open access
Semantic Scholar
Febrile Myoclonus: A Survey of Pediatric Neurologists
K. Rajakumar, J. Bodensteiner
1996La Clinica pediatrica18 citations
Semantic Scholar
Impact of Seasonal Flux on 25-hydroxyvitamin D and Bone Turnover in Pre- and Early Pubertal Youth
K. Rajakumar, M. Holick, Charity G. Moore, Elan D. Cohen +5 more
2014Pediatrics International14 citations Open access
Semantic Scholar
Centennial year of Ronald Ross' epic discovery of malaria transmission: an essay and tribute.
K. Rajakumar, Martin E. Weisse
1999Southern medical journal (Birmingham, Ala. Print)13 citations
Semantic Scholar
25-Hydroxyvitamin D concentrations and in vivo insulin sensitivity and β-cell function relative to insulin sensitivity in black and white youth. Diabetes Care 2012;35:627–633
K. Rajakumar, J. de las Heras, SoJung Lee, M. Holick +1 more
2012Diabetes Care10 citations Open access
Semantic Scholar
Stent encrustation in feline and human artificial urine: does the low molecular weight composition account for the difference?
M. Shafat, K. Rajakumar, H. Syme, N. Buchholz +1 more
2013Urolithiasis9 citations
Semantic Scholar
Determinants of 25-Hydroxyvitamin D Concentrations in Infants and Toddlers
Hilary K Michel, Flora Olabopo, Li Wang, A. Nucci +2 more
2015Current Nutrition & Food Science8 citations Open access
Semantic Scholar
Gene Expression and Cardiometabolic Phenotypes of Vitamin D-Deficient Overweight and Obese Black Children
K. Rajakumar, Qi Yan, Arshad T. Khalid, E. Feingold +3 more
2019Nutrients7 citations Open access
Semantic Scholar
SARS-CoV-2 Omicron Neutralization After Heterologous Vaccine Boosting
K. Lyke, R. Atmar, C. D. Domínguez Islas, C. Posavad +32 more
2022medRxiv6 citations Open access
Semantic Scholar
Mucosal and Systemic Antibody Responses After Boosting With a Bivalent Messenger RNA Severe Acute Respiratory Syndrome Coronavirus 2 Vaccine.
R. Atmar, K. Lyke, C. Posavad, M. Deming +33 more
2025Journal of Infectious Diseases3 citations
Semantic Scholar
n D Concentrations and In Vivo Insulin Sensitivity and b-Cell Function Relative to Insulin Sensitivity in Black and White Youth
K. Rajakumar, J. de las Heras, SoJung Lee, M. Holick +1 more
20122 citations
Semantic Scholar
Pellagra in the United States: A Historical
K. Rajakumar
20002 citations
Semantic Scholar
Solar ultraviolet radiation and vitamin D (American Journal of Public Health (2007) 97, (1746-1754) doi:10.2105/AJPH.2006.091736
K. Rajakumar, S. Greenspan, Stephen B. Thomas, M. Holick
20071 citations
Semantic Scholar
The Centennial Year of Ronald Ross' Epic Discovery of Malaria Transmission: An Essay and Tribute ♦ 895
K. Rajakumar, M. Weisse
1998Pediatric Research1 citations
Semantic Scholar
Altered consciousness and shock in a malnourished child.
Monique K. Gingold, K. Rajakumar, A. Rosas
1996Seminars in Pediatric Neurology1 citations
Semantic Scholar
Glycemia Range and Offspring Weight and adiposity in response To Human milk (GROWTH) study: protocol for an observational cohort designed to study lactational programming
Jami L. Josefson, B. Gregg, Sarbattama Sen, K. Rajakumar +7 more
2026BMJ Open0 citations Open access
Semantic Scholar
25-Hydroxyvitamin D in Obese Youth Across theSpectrumofGlucoseTolerance FromNormal to Prediabetes to Type 2 Diabetes
J. de las Heras, K. Rajakumar, SoJung Lee, F. Bacha +6 more
20130 citations
Semantic Scholar
Studies on Myocardial, Valvular and Congenital Heart Disorders in Dogs
K. Rajakumar
20130 citations
Semantic Scholar
Vitamin D Deficiency: Historical Perspectives
K. Rajakumar, M. Holick
20120 citations
Semantic Scholar
SOLAR Ultraviolet Radiation
K. Rajakumar, S. Greenspan, M. Holick
20070 citations
Semantic Scholar
WITHDRAWN: Discordant blood culture sets: Does the volume of blood inoculated into each set of bottles account for this phenomenon?
K. Rajakumar, N. Perera
20060 citations
Semantic Scholar
Failure to thrive and two weeks of persistent vomiting in an 11-month-old infant.
K. Rajakumar, M. Hogan, N. Wilson
2000Annals of Allergy, Asthma & Immunology0 citations
Semantic Scholar
COMPARATIVE STUDY OF CLINICAL EVALUATION OF HEART MURMURS BY GENERAL PEDIATRICIANS AND PEDIATRIC CARDIOLOGISTS. † 818
K. Rajakumar, M. Weisse, A. Rosas, W. Neal +3 more
1996Pediatric Research0 citations
Semantic Scholar
CHEMICAL REGULATION OF DORMANCY IN Gladiolus hortensis L. (cv. Dr. Fleming and Mansoer Red) CORMS
K. Rajakumar
19930 citations
Semantic Scholar

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