World's Best Scientists 2026 revealed!

D-Index & Metrics

Social Sciences and Humanities

D-Index
63
Citations
13258
World Ranking
1195
National Ranking
557

Alex H. Kral publication distribution in Social Sciences and Humanities in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Social Sciences and Humanities in 2026. The highlighted bar marks where Alex H. Kral sits on this spectrum.

44–53 publications: 28 scientists 54–63 publications: 61 scientists 64–73 publications: 161 scientists 74–83 publications: 225 scientists 84–93 publications: 301 scientists 94–103 publications: 390 scientists 104–113 publications: 406 scientists 114–123 publications: 474 scientists 124–133 publications: 453 scientists 134–143 publications: 434 scientists 144–153 publications: 407 scientists 154–163 publications: 411 scientists 164–173 publications: 391 scientists 174–183 publications: 313 scientists 184–193 publications: 319 scientists 194–203 publications: 304 scientists 204–213 publications: 285 scientists 214–223 publications: 246 scientists 224–233 publications: 213 scientists 234–243 publications: 170 scientists 244–253 publications: 167 scientists 254–263 publications: 162 scientists 264–273 publications: 138 scientists 274–283 publications: 138 scientists 284–293 publications: 113 scientists 294–303 publications: 106 scientists 304–313 publications: 95 scientists 314–323 publications: 101 scientists 324–333 publications: 81 scientists 334–343 publications: 69 scientists 344–353 publications: 56 scientists 354–363 publications: 36 scientists 364–373 publications: 42 scientists 374–383 publications: 41 scientists 384–393 publications: 44 scientists 394–403 publications: 27 scientists 404–413 publications: 30 scientists 414–423 publications: 20 scientists 424–433 publications: 29 scientists 434–443 publications: 29 scientists 444–453 publications: 25 scientists 454–463 publications: 19 scientists 464–473 publications: 21 scientists 474–483 publications: 11 scientists 484–493 publications: 17 scientists 494–503 publications: 7 scientists 504–513 publications: 6 scientists 514–523 publications: 12 scientists 524–533 publications: 10 scientists 534–543 publications: 7 scientists 544–553 publications: 6 scientists 554–563 publications: 12 scientists 564–569 publications: 8 scientists 570+ publications: 100 scientists
44 publications 570+

This scientist: 262 publications — 81st percentile

81% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 570 publications or more.

Alex H. Kral D-index placement in Social Sciences and Humanities in 2026

The chart shows the D-index (discipline H-index) distribution of Social Sciences and Humanities scientists ranked by Research.com in 2026. The highlighted bar marks where Alex H. Kral sits on this spectrum.

30 D-Index: 177 scientists 31 D-Index: 210 scientists 32 D-Index: 222 scientists 33 D-Index: 188 scientists 34 D-Index: 181 scientists 35 D-Index: 243 scientists 36 D-Index: 261 scientists 37 D-Index: 272 scientists 38 D-Index: 278 scientists 39 D-Index: 300 scientists 40 D-Index: 297 scientists 41 D-Index: 308 scientists 42 D-Index: 313 scientists 43 D-Index: 300 scientists 44 D-Index: 269 scientists 45 D-Index: 260 scientists 46 D-Index: 228 scientists 47 D-Index: 251 scientists 48 D-Index: 203 scientists 49 D-Index: 186 scientists 50 D-Index: 187 scientists 51 D-Index: 166 scientists 52 D-Index: 138 scientists 53 D-Index: 141 scientists 54 D-Index: 131 scientists 55 D-Index: 137 scientists 56 D-Index: 109 scientists 57 D-Index: 129 scientists 58 D-Index: 95 scientists 59 D-Index: 105 scientists 60 D-Index: 106 scientists 61 D-Index: 86 scientists 62 D-Index: 94 scientists 63 D-Index: 77 scientists 64 D-Index: 79 scientists 65 D-Index: 59 scientists 66 D-Index: 68 scientists 67 D-Index: 51 scientists 68 D-Index: 49 scientists 69 D-Index: 40 scientists 70 D-Index: 43 scientists 71 D-Index: 40 scientists 72 D-Index: 50 scientists 73 D-Index: 46 scientists 74 D-Index: 43 scientists 75 D-Index: 45 scientists 76 D-Index: 45 scientists 77 D-Index: 30 scientists 78 D-Index: 25 scientists 79 D-Index: 31 scientists 80 D-Index: 29 scientists 81 D-Index: 18 scientists 82 D-Index: 21 scientists 83 D-Index: 26 scientists 84 D-Index: 15 scientists 85 D-Index: 15 scientists 86 D-Index: 19 scientists 87 D-Index: 19 scientists 88 D-Index: 12 scientists 89 D-Index: 7 scientists 90 D-Index: 19 scientists 91 D-Index: 20 scientists 92 D-Index: 13 scientists 93 D-Index: 9 scientists 94 D-Index: 13 scientists 95 D-Index: 8 scientists 96 D-Index: 7 scientists 97 D-Index: 6 scientists 98 D-Index: 6 scientists 99 D-Index: 6 scientists 100+ D-Index: 97 scientists
30 D-Index 100+

This scientist: 63 D-Index — 85th percentile

85% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 100 D-Index or more.

Overview

Alex H. Kral is affiliated with RTI International in the United States and has an extensive publication record in the field of Medicine, with a strong focus on epidemiology and public health. Their research primarily addresses issues related to opioid use disorder, substance abuse treatment, and related social and health challenges.

The main fields of study for Alex H. Kral include:

  • Medicine

Key subfields within their work are:

  • Epidemiology
  • Public Health, Environmental and Occupational Health
  • General Health Professions
  • Toxicology
  • Sociology and Political Science

Major topics covered in their research include:

  • Opioid Use Disorder Treatment
  • HIV, Drug Use, Sexual Risk
  • Substance Abuse Treatment and Outcomes
  • Forensic Toxicology and Drug Analysis
  • Homelessness and Social Issues
  • HIV/AIDS Research and Interventions
  • Health Policy Implementation Science

Frequent co-authors with whom Alex H. Kral has collaborated include:

  • Lynn D. Wenger
  • Barrot H. Lambdin
  • Ricky N. Bluthenthal
  • Peter J. Davidson
  • Paul LaKosky

The scientist has published extensively in several journals, with a notable number of articles in:

  • Drug and Alcohol Dependence
  • International Journal of Drug Policy
  • Harm Reduction Journal
  • JAMA Network Open
  • Substance Use & Misuse

Recent publications authored by Alex H. Kral include:

  • Transition from injecting opioids to smoking fentanyl in San Francisco, California, 2021, Drug and Alcohol Dependence
  • Evaluation of an Unsanctioned Safe Consumption Site in the United States, 2020, New England Journal of Medicine

Other notable works in the broader collection of papers associated with this area of research include:

  • Overdose Education and Naloxone Distribution Within Syringe Service Programs - United States, 2019, MMWR Morbidity and Mortality Weekly Report
  • Population-Level Health Effects of Involuntary Displacement of People Experiencing Unsheltered Homelessness Who Inject Drugs in US Cities, 2023, JAMA
  • The naloxone delivery cascade: Identifying disparities in access to naloxone among people who inject drugs in Los Angeles and San Francisco, CA, 2021, Drug and Alcohol Dependence

Best Publications

  • Sexual Transmission of HIV-1 Among Injection Drug Users in San Francisco, USA: Risk-Factor Analysis

    Alex H Kral;Ricky N Bluthenthal;Jennifer Lorvick;Lauren Gee

  • High Prevalence of Abscesses and Cellulitis Among Community-Recruited Injection Drug Users in San Francisco

    Ingrid A. Binswanger;Alex H. Kral;Ricky N. Bluthenthal;Ricky N. Bluthenthal;Daniel J. Rybold

  • Fentanyl test strips as an opioid overdose prevention strategy: Findings from a syringe services program in the Southeastern United States.

    Nicholas Chalmer Peiper;Sarah Elizabeth Duhart Clarke;Louise B Vincent;Dan Ciccarone

  • Suicidal behavior and sexual/physical abuse among street youth

    Beth E. Molnar;Starley B. Shade;Alex H. Kral;Robert E. Booth

  • Is it justifiable to withhold treatment for hepatitis C from illicit-drug users?

    Brian R. Edlin;Karen H. Seal;Jennifer Lorvick;Alex H. Kral

  • Naloxone distribution and cardiopulmonary resuscitation training for injection drug users to prevent heroin overdose death: A pilot intervention study

    Karen H. Seal;Robert Thawley;Lauren Gee;Joshua Bamberger

  • The effect of syringe exchange use on high-risk injection drug users: a cohort study.

    Ricky N. Bluthenthal;Alex H. Kral;Lauren Gee;Elizabeth A. Erringer

  • Opioid-overdose laws association with opioid use and overdose mortality.

    Chandler McClellan;Barrot H Lambdin;Mir M Ali;Ryan Mutter

  • Overdose Prevention and Naloxone Prescription for Opioid Users in San Francisco

    Lauren Enteen;Joanna Bauer;Rachel McLean;Eliza Wheeler

  • Predictors and Prevention of Nonfatal Overdose Among Street-Recruited Injection Heroin Users in the San Francisco Bay Area, 1998–1999

    Karen H. Seal;Alex H. Kral;Lauren Gee;Lisa D. Moore

  • Prevalence of sexual risk behaviour and substance use among runaway and homeless adolescents in San Francisco, Denver and New York City

    Alex Kral;BE Molnar;RE Booth;JK Watters

  • Fatal heroin-related overdose in San Francisco, 1997–2000: a case for targeted intervention

    Peter J. Davidson;Rachel L. McLean;Alex H. Kral;Alice A. Gleghorn

  • Impact of law enforcement on syringe exchange programs: A look at Oakland and San Francisco

    Ricky N. Bluthenthal;Alex H. Kral;Jennifer Lorvick;John K. Watters

  • HIV seroprevalence among street-recruited injection drug and crack cocaine users in 16 US municipalities.

    Alex Kral;RN Bluthenthal;RE Booth;JK Watters

  • Characteristics of an Overdose Prevention, Response, and Naloxone Distribution Program in Pittsburgh and Allegheny County, Pennsylvania

    Alex S. Bennett;Alice Bell;Laura Tomedi;Eric G. Hulsey

  • Collateral damage in the war on drugs: HIV risk behaviors among injection drug users

    Ricky N. Bluthenthal;Ricky N. Bluthenthal;Ricky N. Bluthenthal;Jennifer Lorvick;Alex H. Kral;Elizabeth A. Erringer

  • Prevalence and duration of hepatitis C among injection drug users in San Francisco, Calif.

    Jennifer Lorvick;Alex H. Kral;Karen Seal;Lauren Gee

  • A randomized controlled trial of monetary incentives vs. outreach to enhance adherence to the hepatitis B vaccine series among injection drug users

    Karen H. Seal;Alex H. Kral;Jennifer Lorvick;Alex McNees

  • Prescription Naloxone: A Novel Approach to Heroin Overdose Prevention

    Karl A. Sporer;Alexander H. Kral

  • Reinterpreting ethnic patterns among white and African American men who inject heroin: a social science of medicine approach.

    Philippe Bourgois;Alexis Martinez;Alex Kral;Alex Kral;Brian R Edlin;Brian R Edlin

  • Sexual Transmission of HIV-1 Among Injection Drug Users in San Francisco, USA

    Alex H. Kral;Ricky N. Bluthenthal;Jennifer Lorvick;Lauren Gee

Frequent Co-Authors

Ricky N. Bluthenthal
Ricky N. Bluthenthal University of Southern California
Brian R. Edlin
Brian R. Edlin National Development and Research Institutes
Michael P. Busch
Michael P. Busch University of California, San Francisco
Philippe Bourgois
Philippe Bourgois University of California, Los Angeles
Thomas R. O'Brien
Thomas R. O'Brien National Institutes of Health
Leo Beletsky
Leo Beletsky Northeastern University
Gregory D. Kirk
Gregory D. Kirk Johns Hopkins University
Nancy L. Saccone
Nancy L. Saccone Washington University in St. Louis
Laura J. Bierut
Laura J. Bierut Washington University in St. Louis
Peter Bacchetti
Peter Bacchetti University of California, San Francisco

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