Individual and population-level risk factors for new HIV infections among adults in Eastern and Southern Africa
Abstract
Abstract Despite substantial recent declines, general population HIV incidence in sub-Saharan Africa remains above international targets. Better description of risk factors for new infections would improve prioritisation of interventions. Using data from population-based cohorts in Kenya, Malawi, Tanzania, South Africa, Uganda, Zimbabwe we described the prevalence of risk factors for men and women aged 15-24 and 25-49 and estimated the association between individual and community-level risk factors and HIV acquisition between 2005 and 2016. Among 43,434 men and 55,919 women aged 15 to 49 there were 4,612 seroconversions. Education, marital status, male circumcision, new sexual partners, types of partner, prevalence of untreated HIV infection in the community and community partner acquisition rates were associated with HIV incidence. Only the prevalence of untreated HIV was a risk for both sexes and apparent at all ages. The prevalence of risk factors varied by age, sex and study. HIV incidence was higher in people aged 25-49 living in communities where men had high partner acquisition rates. Our results show potential for improved prevention through changed timing of prevention interventions relative to behaviour and the utility of using community characteristics to target prevention.
Article Details
Authors (42)
Emma Slaymaker
Clara Calvert
Milly Marston
Kathryn Risher
Jeffrey W. Imai-Eaton
Louisa Moorhouse
Alison Price
Ramadhani Abdul
Albert Dube
Dorean Nabukalu
David Obor
Estelle McLean
Malebogo Tlhajoane
Keith Tomlin
Mark Urassa
Kathy Baisley
Amelia Crampin
Eveline Geubbels
Simon Gregson
Kobus Herbst
Daniel Kwaro
Tom Lutalo
Rob Newton
Jim Todd
Georges Reniers
Chifundo Kanjala
Julie Ambia
Tawanda Dadirai
Dickman Gareta
Coleman Kishamawe
Gertrude Mutonyi
Njabulo Myeza
Constance Nyamukapa
Anthony Ndyanabo
George Olilo
Albert Takaruza
Charles Festo
Sylvia Kusemererwa
Nuala McGrath
Denna Michael
Alison Wringe
Emmanuel Mtuli