Browsing by Author "Grabowski, Mary Kate"

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    Migration, hotspots, and dispersal of HIV infection in Rakai, Uganda
    (Nature Communications, 2020) Grabowski, Mary Kate; Lessler, Justin; Bazaale, Jeremiah; Nabukalu, Dorean; Nankinga, Justine; Nantume, Betty; Ssekasanvu, Joseph; Reynolds, Steven J.; Ssekubugu, Robert; Nalugoda, Fred; Kigozi, Godfrey; Kagaayi, Joseph; Santelli, John S.; Kennedy, Caitlin; Wawer, Maria J.; Serwadda, David; Chang, Larry W.; Gray, Ronald H.
    HIV prevalence varies markedly throughout Africa, and it is often presumed areas of higher HIV prevalence (i.e., hotspots) serve as sources of infection to neighboring areas of lower prevalence. However, the small-scale geography of migration networks and movement of HIV-positive individuals between communities is poorly understood. Here, we use population-based data from ~22,000 persons of known HIV status to characterize migratory patterns and their relationship to HIV among 38 communities in Rakai, Uganda with HIV prevalence ranging from 9 to 43%. We find that migrants moving into hotspots had significantly higher HIV prevalence than migrants moving elsewhere, but out-migration from hotspots was geographically dispersed, contributing minimally to HIV burden in destination locations. Our results challenge the assumption that high prevalence hotspots are drivers of transmission in regional epidemics, instead suggesting that migrants with high HIV prevalence, particularly women, selectively migrate to these areas.
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    Severe Acute Respiratory Syndrome Coronavirus-2 Seropositivity in South-Central Uganda, During 2019 - 2021
    (Research Square, 2021) Ssuuna, Charles; Galiwango, Ronald Moses; Kankaka, Edward Nelson; Kagaayi, Joseph; Ndyanabo, Anthony; Kigozi, Godfrey; Nakigozi, Gertrude; Lutalo, Tom; Ssekubugu, Robert; Wasswa, John Bosco; Mayinja, Anthony; Nakibuuka, Martina Cathy; Jamiru, Samiri; Oketch, John Baptist; Muwanga, Edward; Chang, Larry William; Grabowski, Mary Kate; Wawer, Maria; Gray, Ronald; Anderson, Mark; Serwadda, David
    Globally, key subpopulations such as healthcare workers (HCWs) have a higher risk of contracting SARS-CoV-2. In Uganda, limited access to personal protective equipment amidst lack of clarity on the extent and pattern of the community disease burden may exacerbate this situation. We assessed SARS-CoV-2 antibody seroprevalence among high-risk sub-populations in South-central Uganda, including HCWs, persons within the general population previously reporting experiencing key COVID-19 like symptoms (fever, cough, loss of taste and smell) and archived plasma specimens collected between October 2019 – 18th March 2020, prior to confirmation of COVID-19 in Uganda.