Gregory D Kirk
Biographic Data
| ID | 6678673 |
|---|---|
| NAME | Gregory D Kirk |
| GIVEN NAMES | Gregory D |
| FAMILY NAME | Kirk |
| SIGNATURE | KIRK G D |
| AFFILIATIONS | Johns Hopkins University |
| ORCID | 0000-0002-7829-1405 |
| VERIFIED | Yes |
| TOTAL WORKS | 22 |
| TOTAL CITATIONS | 3 |
| AUTHOR COUNT | 22 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1999 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 1 |
Characterizing the Geography of Drug Use Networks and Behaviors Among People Who Inject Drugs in the Baltimore Metropolitan Region
The geography of injection drug use in the United States continues to evolve and expand outside of urban areas, yet there is little understanding of the extent to which urban and non-urban networks of people who inject drugs (PWID) interact, which has implications for HIV and hepatitis C transmission (HCV). Here, we characterize individuals with mixed geography PWID networks in the Baltimore, Maryland region, as well as prospective associations w…
“Especially Being Homeless, They Just Think You’re Infected with Covid or Something”
People experiencing homelessness with a substance use disorder are a highly structurally vulnerable population, facing a unique burden of compounding stigma, discrimination, and adverse health outcomes. Evidence remains mixed on best practices for housing interventions designed to best meet the needs of this population. Ten people with a history of injection drug use experiencing homelessness during the COVID-19 pandemic were interviewed between …
‘ They just kind of disappeared’
Background Social networks shape substance use behaviors and health outcomes among people who inject drugs (PWID), yet the ways in which large-scale crises influence network dynamics, particularly through positive changes, remains underexplored. We examine the COVID-19 pandemic’s impact on social networks of PWID and subsequent changes to substance use behaviors.Methods Twenty-eight in-depth interviews were conducted between July 2021 and Februar…
Concurrent Use of Extra‐Medical Medication for Opioid Use Disorder Among Adults Prescribed Methadone or Buprenorphine
Drug treatment and support service utilization amidst the Covid-19 pandemic among people who inject drugs in Baltimore, Maryland
Drug Use-Related Discrimination in Healthcare Settings and Subsequent Emergency Department Utilization in a Prospective Cohort Study of People With a History of Injection Drug Use
BACKGROUND: People with a history of injection drug use face discrimination in healthcare settings that may impede their use of routine care, leading to greater reliance on the emergency department (ED) for addressing health concerns. The relationship between discrimination in healthcare settings and subsequent ED utilization has not been established in this population. METHODS: This analysis used longitudinal data collected between January 2014 …
Relationship between patient activation and utilisation of health care and harm reduction services among people who inject drugs in Baltimore, Maryland
Longitudinal patterns of use of stimulants and opioids in the Aids linked to the IntraVenous experience cohort, 2005–2019
Trajectories of drug treatment and illicit opioid use in the Aids Linked to the IntraVenous Experience cohort, 2014–2019
Adverse childhood experiences and comorbidity in a cohort of people who have injected drugs
Among people who have injected drugs, adverse childhood experiences were common and associated with increased occurrence of self-reported medical comorbidities. Findings highlight the persistent importance of adversity for physical health even in a population where all members have used drugs and there is a high burden of comorbidity
Mortality by cause of death during year 1 of the Covid-19 pandemic in a cohort of older adults from Baltimore Maryland who have injected drugs
Recent fentanyl use among people who inject drugs
Avoidance, meaning and grief
Although the introduction of antiretroviral therapy has rendered HIV a chronic illness, inconsistent engagement in HIV care by key populations limits its public health impact. Poor engagement in care is especially prevalent among vulnerable populations with mental health and substance use disorders. Beyond structural and health system considerations, psychosocial factors may present challenges to sustained engagement. We conducted a qualitative s…
A randomized study of contingency management and spirometric lung age for motivating smoking cessation among injection drug users
Clinicaltrials.gov NCT01334736 (April 12, 2011)
Level of Adherence and HIV RNA Suppression in the Current Era of Highly Active Antiretroviral Therapy (Haart)
The association between neighborhood residential rehabilitation and injection drug use in Baltimore, Maryland, 2000–2011
Closing the Gap
BACKGROUND: Combination antiretroviral therapy (ART) has significantly increased survival among HIV-positive adults in the United States (U.S.) and Canada, but gains in life expectancy for this region have not been well characterized. We aim to estimate temporal changes in life expectancy among HIV-positive adults on ART from 2000-2007 in the U.S. and Canada. METHODS: Participants were from the North American AIDS Cohort Collaboration on Research…
Everything that looks good ain’t good!”
HIV and COPD
Effect of Early versus Deferred Antiretroviral Therapy for HIV on Survival
BACKGROUND: The optimal time for the initiation of antiretroviral therapy for asymptomatic patients with human immunodeficiency virus (HIV) infection is uncertain. METHODS: We conducted two parallel analyses involving a total of 17,517 asymptomatic patients with HIV infection in the United States and Canada who received medical care during the period from 1996 through 2005. None of the patients had undergone previous antiretroviral therapy. In ea…
Early immunologic and virologic responses to highly active antiretroviral therapy and subsequent disease progression among HIV-infected injection drug users
We examined the prevalence and prognostic value of early responses to highly active antiretroviral therapy (HAART) among community-based injection drug users (IDUs) in Baltimore. Virologic (HIV RNA 500 cells/ul or increase of 50 cells/ul from the pre-HAART level) responses were examined in the 1st year of HAART initiation. Cox regression was used to examine the effect of early response on progression to new AIDS diagnosis or AIDS-related death. A…
Jamaica's measles elimination experience
OBJECTIVES: This article describes the effort to eliminate measles from Jamaica and its impact on measles incidence. METHODS: In addition to routine measles vaccination, the Jamaican Ministry of Health implemented a strategy of a 1-time-only catch-up vaccination campaign, conducted in 1991, and periodic follow-up campaigns, the first of which occurred in 1995. RESULTS: Since 1991, despite careful surveillance, no serologically confirmed indigenou…
Jamaica's measles elimination experience
OBJECTIVES: This article describes the effort to eliminate measles from Jamaica and its impact on measles incidence. METHODS: In addition to routine measles vaccination, the Jamaican Ministry of Health implemented a strategy of a 1-time-only catch-up vaccination campaign, conducted in 1991, and periodic follow-up campaigns, the first of which occurred in 1995. RESULTS: Since 1991, despite careful surveillance, no serologically confirmed indigenou…
Early immunologic and virologic responses to highly active antiretroviral therapy and subsequent disease progression among HIV-infected injection drug users
We examined the prevalence and prognostic value of early responses to highly active antiretroviral therapy (HAART) among community-based injection drug users (IDUs) in Baltimore. Virologic (HIV RNA 500 cells/ul or increase of 50 cells/ul from the pre-HAART level) responses were examined in the 1st year of HAART initiation. Cox regression was used to examine the effect of early response on progression to new AIDS diagnosis or AIDS-related death. A…
Effect of Early versus Deferred Antiretroviral Therapy for HIV on Survival
BACKGROUND: The optimal time for the initiation of antiretroviral therapy for asymptomatic patients with human immunodeficiency virus (HIV) infection is uncertain. METHODS: We conducted two parallel analyses involving a total of 17,517 asymptomatic patients with HIV infection in the United States and Canada who received medical care during the period from 1996 through 2005. None of the patients had undergone previous antiretroviral therapy. In ea…
HIV and COPD
Closing the Gap
BACKGROUND: Combination antiretroviral therapy (ART) has significantly increased survival among HIV-positive adults in the United States (U.S.) and Canada, but gains in life expectancy for this region have not been well characterized. We aim to estimate temporal changes in life expectancy among HIV-positive adults on ART from 2000-2007 in the U.S. and Canada. METHODS: Participants were from the North American AIDS Cohort Collaboration on Research…
Everything that looks good ain’t good!”
A randomized study of contingency management and spirometric lung age for motivating smoking cessation among injection drug users
Clinicaltrials.gov NCT01334736 (April 12, 2011)
Level of Adherence and HIV RNA Suppression in the Current Era of Highly Active Antiretroviral Therapy (Haart)
The association between neighborhood residential rehabilitation and injection drug use in Baltimore, Maryland, 2000–2011
Avoidance, meaning and grief
Although the introduction of antiretroviral therapy has rendered HIV a chronic illness, inconsistent engagement in HIV care by key populations limits its public health impact. Poor engagement in care is especially prevalent among vulnerable populations with mental health and substance use disorders. Beyond structural and health system considerations, psychosocial factors may present challenges to sustained engagement. We conducted a qualitative s…
Recent fentanyl use among people who inject drugs
Adverse childhood experiences and comorbidity in a cohort of people who have injected drugs
Among people who have injected drugs, adverse childhood experiences were common and associated with increased occurrence of self-reported medical comorbidities. Findings highlight the persistent importance of adversity for physical health even in a population where all members have used drugs and there is a high burden of comorbidity
Mortality by cause of death during year 1 of the Covid-19 pandemic in a cohort of older adults from Baltimore Maryland who have injected drugs
Trajectories of drug treatment and illicit opioid use in the Aids Linked to the IntraVenous Experience cohort, 2014–2019
Drug Use-Related Discrimination in Healthcare Settings and Subsequent Emergency Department Utilization in a Prospective Cohort Study of People With a History of Injection Drug Use
BACKGROUND: People with a history of injection drug use face discrimination in healthcare settings that may impede their use of routine care, leading to greater reliance on the emergency department (ED) for addressing health concerns. The relationship between discrimination in healthcare settings and subsequent ED utilization has not been established in this population. METHODS: This analysis used longitudinal data collected between January 2014 …
Relationship between patient activation and utilisation of health care and harm reduction services among people who inject drugs in Baltimore, Maryland
Longitudinal patterns of use of stimulants and opioids in the Aids linked to the IntraVenous experience cohort, 2005–2019
Drug treatment and support service utilization amidst the Covid-19 pandemic among people who inject drugs in Baltimore, Maryland
Characterizing the Geography of Drug Use Networks and Behaviors Among People Who Inject Drugs in the Baltimore Metropolitan Region
The geography of injection drug use in the United States continues to evolve and expand outside of urban areas, yet there is little understanding of the extent to which urban and non-urban networks of people who inject drugs (PWID) interact, which has implications for HIV and hepatitis C transmission (HCV). Here, we characterize individuals with mixed geography PWID networks in the Baltimore, Maryland region, as well as prospective associations w…
“Especially Being Homeless, They Just Think You’re Infected with Covid or Something”
People experiencing homelessness with a substance use disorder are a highly structurally vulnerable population, facing a unique burden of compounding stigma, discrimination, and adverse health outcomes. Evidence remains mixed on best practices for housing interventions designed to best meet the needs of this population. Ten people with a history of injection drug use experiencing homelessness during the COVID-19 pandemic were interviewed between …
‘ They just kind of disappeared’
Background Social networks shape substance use behaviors and health outcomes among people who inject drugs (PWID), yet the ways in which large-scale crises influence network dynamics, particularly through positive changes, remains underexplored. We examine the COVID-19 pandemic’s impact on social networks of PWID and subsequent changes to substance use behaviors.Methods Twenty-eight in-depth interviews were conducted between July 2021 and Februar…
Concurrent Use of Extra‐Medical Medication for Opioid Use Disorder Among Adults Prescribed Methadone or Buprenorphine
Medicine (19 works) · HIV, Drug Use, Sexual Risk (15 works) · Cohort (12 works) · Internal Medicine (11 works) · Psychiatry (11 works) · Opioid Use Disorder Treatment (10 works) · Demography (9 works) · HIV/AIDS Research and Interventions (8 works) · Gerontology (7 works) · Cohort study (6 works)