Duncan Mackellar
Biographic Data
| ID | 4370340 |
|---|---|
| NAME | Duncan Mackellar |
| GIVEN NAMES | Duncan |
| FAMILY NAME | Mackellar |
| SIGNATURE | MACKELLAR D |
| AFFILIATIONS | Centers for Disease Control and Prevention |
| ORCID | 0000-0001-8217-9881 |
| VERIFIED | Yes |
| TOTAL WORKS | 16 |
| TOTAL CITATIONS | 9 |
| WORKS AS AUTHOR | 16 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2000 |
| LATEST PUBLICATION YEAR | 2024 |
| H-INDEX | 1 |
Cost-outcome analysis of HIV testing and counseling, linkage, and defaulter tracing services in Bukoba, Tanzania
Effective services along the HIV continuum of care from HIV testing and counseling to linkage, and from linkage to antiretroviral therapy (ART) initiation and retention, are key to improved health outcomes of persons living with HIV. A comprehensive analysis of the costs and outcomes of cascade services is needed to help allocate and prioritize resources to achieve UNAIDS targets. We evaluated the costs and population-level impact of a community-…
Evaluation of Community-Based, Mobile HIV-Care, Peer-Delivered Linkage Case Management in Manzini Region, Eswatini
The success of antiretroviral therapy (ART) requires continuous engagement in care and optimal levels of adherence to achieve sustained HIV viral suppression. We evaluated HIV-care cascade costs and outcomes of a community-based, mobile HIV-care, peer-delivered linkage case-management program (CommLink) implemented in Manzini region, Eswatini. Abstraction teams visited referral facilities during July 2019-April 2020 to locate, match, and abstract…
Overcoming Barriers to HIV Care
Trends in HIV Prevalence and HIV Testing Among Young MSM
Client Characteristics and Gender-Specific Correlates of Testing HIV Positive
A Plausible Causal Model of Haart-Efficacy Beliefs, HIV/Aids Complacency, and HIV-Acquisition Risk Behavior Among Young Men Who Have Sex with Men
HIV Prevention Services Received at Health Care and HIV Test Providers by Young Men who Have Sex with Men
The Young Men’s Survey Phase II
Objectives. We measured the prevalence of hepatitis B virus (HBV) immunization and HBV infection among men aged 23 to 29 years who have sex with men. Methods. We analyzed data from 2834 men who have sex with men in 6 US metropolitan areas. Participants were interviewed and tested for serologic markers of immunization and HBV infection in 1998 through 2000. Results. Immunization prevalence was 17.2%; coverage was 21.0% among participants with priv…
Surveillance of HIV Risk and Prevention Behaviors of Men Who Have Sex with Men—A National Application of Venue-Based, Time-Space Sampling
In collaboration with the Centers for Disease Control and Prevention, participating state and local health departments, universities, and community-based organizations applied venue-based, time-space sampling methods for the first wave of National HIV Behavioral Surveillance of men who have sex with men (NHBS-MSM). Conducted in 17 metropolitan areas in the United States and Puerto Rico from November 2003 through April 2005, NHBS-MSM methods inclu…
Prevalence of HIV Infection and Prior HIV Testing among Young Men Who have Sex with Men. The Baltimore Young Men’s Survey
Violence and HIV-related risk among young men who have sex with men
Limited research has been conducted on threats or violence by family members and sexual partners against young men who have sex with men (MSM). Young MSM, aged 15-22 years, who attended public venues in New York City were enrolled in an anonymous, cross-sectional HIV seroprevalence and risk-behavior study. About two-thirds (68%) of the young MSM reported ever experiencing threats or violence from either family or partners and 25% reported threats…
Perceptions of Lifetime Risk and Actual Risk for Acquiring HIV Among Young Men Who Have Sex with Men
Unrecognized HIV Infection, Risk Behaviors, and Perceptions of Risk Among Young Men Who Have Sex With Men
This study evaluated the magnitude and distribution of unrecognized HIV infection among young men who have sex with men (MSM) and of those with unrecognized infection, the prevalence and correlates of unprotected anal intercourse (UAI), perceived low risk for infection, and delayed HIV testing. MSM aged 15-29 years were approached, interviewed, counseled, and tested for HIV at 263 randomly sampled venues in 6 US cities from 1994-2000. Of 5649 MSM…
Associations of Race/Ethnicity With HIV Prevalence and HIV-Related Behaviors Among Young Men Who Have Sex With Men in 7 Urban Centers in the United States
Using data from a multisite venue-based survey of male subjects aged 15 to 22 years, we examined racial/ethnic differences in demographics, partner type, partner type-specific condom use, drug use, and HIV prevalence in 3316 US black, multiethnic black, Latino, and white men who have sex with men (MSM). We further estimated associations of these factors with HIV infection and their influence on racial/ethnic disparities in HIV prevalence. HIV pre…
The Effect of Partner Characteristics on HIV Infection Among African American Men Who Have Sex With Men in the Young Men's Survey, Los Angeles, 1999–2000
Previous studies have documented disparities in HIV prevalence by race among men who have sex with men (MSM), even after adjusting for traditional risk factors. In this analysis of data collected for the 1999-2000 Los Angeles Young Men's Survey, a cross-sectional venue-based survey of MSM aged 23-29, we investigated whether information on male sex-partner characteristics accounts for some of the racial/ethnic differences in HIV prevalence. In thi…
Hiv Risk Behavior of Runaway Youth in San Francisco
The purpose of this study was to describe HIV risk behavior among runaway youth in San Francisco by age at onset and sexual orientation. Participants were a cross-sectional sample (N = 334) of male and female youth aged 12 to 21 years seeking health care at two clinics serving runaway youth. Gay/lesbian/bisexual youth reported higher levels and earlier onset of sexual and drug-using behavior compared with their heterosexual counterparts. Gay/lesb…
Hiv Risk Behavior of Runaway Youth in San Francisco
The purpose of this study was to describe HIV risk behavior among runaway youth in San Francisco by age at onset and sexual orientation. Participants were a cross-sectional sample (N = 334) of male and female youth aged 12 to 21 years seeking health care at two clinics serving runaway youth. Gay/lesbian/bisexual youth reported higher levels and earlier onset of sexual and drug-using behavior compared with their heterosexual counterparts. Gay/lesb…
HIV Prevention Services Received at Health Care and HIV Test Providers by Young Men who Have Sex with Men
Hiv Risk Behavior of Runaway Youth in San Francisco
The purpose of this study was to describe HIV risk behavior among runaway youth in San Francisco by age at onset and sexual orientation. Participants were a cross-sectional sample (N = 334) of male and female youth aged 12 to 21 years seeking health care at two clinics serving runaway youth. Gay/lesbian/bisexual youth reported higher levels and earlier onset of sexual and drug-using behavior compared with their heterosexual counterparts. Gay/lesb…
The Effect of Partner Characteristics on HIV Infection Among African American Men Who Have Sex With Men in the Young Men's Survey, Los Angeles, 1999–2000
Previous studies have documented disparities in HIV prevalence by race among men who have sex with men (MSM), even after adjusting for traditional risk factors. In this analysis of data collected for the 1999-2000 Los Angeles Young Men's Survey, a cross-sectional venue-based survey of MSM aged 23-29, we investigated whether information on male sex-partner characteristics accounts for some of the racial/ethnic differences in HIV prevalence. In thi…
Associations of Race/Ethnicity With HIV Prevalence and HIV-Related Behaviors Among Young Men Who Have Sex With Men in 7 Urban Centers in the United States
Using data from a multisite venue-based survey of male subjects aged 15 to 22 years, we examined racial/ethnic differences in demographics, partner type, partner type-specific condom use, drug use, and HIV prevalence in 3316 US black, multiethnic black, Latino, and white men who have sex with men (MSM). We further estimated associations of these factors with HIV infection and their influence on racial/ethnic disparities in HIV prevalence. HIV pre…
Unrecognized HIV Infection, Risk Behaviors, and Perceptions of Risk Among Young Men Who Have Sex With Men
This study evaluated the magnitude and distribution of unrecognized HIV infection among young men who have sex with men (MSM) and of those with unrecognized infection, the prevalence and correlates of unprotected anal intercourse (UAI), perceived low risk for infection, and delayed HIV testing. MSM aged 15-29 years were approached, interviewed, counseled, and tested for HIV at 263 randomly sampled venues in 6 US cities from 1994-2000. Of 5649 MSM…
Violence and HIV-related risk among young men who have sex with men
Limited research has been conducted on threats or violence by family members and sexual partners against young men who have sex with men (MSM). Young MSM, aged 15-22 years, who attended public venues in New York City were enrolled in an anonymous, cross-sectional HIV seroprevalence and risk-behavior study. About two-thirds (68%) of the young MSM reported ever experiencing threats or violence from either family or partners and 25% reported threats…
Perceptions of Lifetime Risk and Actual Risk for Acquiring HIV Among Young Men Who Have Sex with Men
Surveillance of HIV Risk and Prevention Behaviors of Men Who Have Sex with Men—A National Application of Venue-Based, Time-Space Sampling
In collaboration with the Centers for Disease Control and Prevention, participating state and local health departments, universities, and community-based organizations applied venue-based, time-space sampling methods for the first wave of National HIV Behavioral Surveillance of men who have sex with men (NHBS-MSM). Conducted in 17 metropolitan areas in the United States and Puerto Rico from November 2003 through April 2005, NHBS-MSM methods inclu…
Prevalence of HIV Infection and Prior HIV Testing among Young Men Who have Sex with Men. The Baltimore Young Men’s Survey
HIV Prevention Services Received at Health Care and HIV Test Providers by Young Men who Have Sex with Men
The Young Men’s Survey Phase II
Objectives. We measured the prevalence of hepatitis B virus (HBV) immunization and HBV infection among men aged 23 to 29 years who have sex with men. Methods. We analyzed data from 2834 men who have sex with men in 6 US metropolitan areas. Participants were interviewed and tested for serologic markers of immunization and HBV infection in 1998 through 2000. Results. Immunization prevalence was 17.2%; coverage was 21.0% among participants with priv…
A Plausible Causal Model of Haart-Efficacy Beliefs, HIV/Aids Complacency, and HIV-Acquisition Risk Behavior Among Young Men Who Have Sex with Men
Client Characteristics and Gender-Specific Correlates of Testing HIV Positive
Trends in HIV Prevalence and HIV Testing Among Young MSM
Overcoming Barriers to HIV Care
Evaluation of Community-Based, Mobile HIV-Care, Peer-Delivered Linkage Case Management in Manzini Region, Eswatini
The success of antiretroviral therapy (ART) requires continuous engagement in care and optimal levels of adherence to achieve sustained HIV viral suppression. We evaluated HIV-care cascade costs and outcomes of a community-based, mobile HIV-care, peer-delivered linkage case-management program (CommLink) implemented in Manzini region, Eswatini. Abstraction teams visited referral facilities during July 2019-April 2020 to locate, match, and abstract…
Cost-outcome analysis of HIV testing and counseling, linkage, and defaulter tracing services in Bukoba, Tanzania
Effective services along the HIV continuum of care from HIV testing and counseling to linkage, and from linkage to antiretroviral therapy (ART) initiation and retention, are key to improved health outcomes of persons living with HIV. A comprehensive analysis of the costs and outcomes of cascade services is needed to help allocate and prioritize resources to achieve UNAIDS targets. We evaluated the costs and population-level impact of a community-…
Medicine (16 works) · HIV, Drug Use, Sexual Risk (15 works) · HIV/AIDS Research and Interventions (14 works) · Demography (12 works) · Family medicine (11 works) · Men who have sex with men (11 works) · Adolescent Sexual and Reproductive Health (10 works) · Environmental health (8 works) · Gerontology (8 works) · Human immunodeficiency virus (HIV (8 works)