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OBJECTIVES To assess the factors associated with the use of health professionals for delivery following the implementation of a free obstetric care policy in the poorest regions of Ghana. METHODS All 4,070 women identified in the Navrongo demographic surveillance system with pregnancy outcomes in the Kassena-Nankana district between January 1 and December(More)
BACKGROUND Rotavirus gastroenteritis causes many deaths in infants in sub-Saharan Africa. Because rotavirus vaccines have proven effective in developed countries but had not been tested in developing countries, we assessed efficacy of a pentavalent rotavirus vaccine against severe disease in Ghana, Kenya, and Mali between April, 2007, and March, 2009. (More)
Understanding of the age- and season- dependence of malaria mortality is an important prerequisite for epidemiologic models of malaria immunity. However, most studies of malaria mortality have aggregated their results into broad age groups and across seasons, making it hard to predict the likely impact of interventions targeted at specific age groups of(More)
OBJECTIVE To evaluate the effects of intermittent preventive treatment for malaria in infants (IPTi) with sulfadoxine-pyrimethamine in an area of intense, seasonal transmission. DESIGN Cluster randomised placebo controlled trial, with 96 clusters allocated randomly to sulfadoxine-pyrimethamine or placebo in blocks of eight. INTERVENTIONS Children(More)
BACKGROUND The individual informed consent model remains critical to the ethical conduct and regulation of research involving human beings. Parental informed consent process in a rural setting of northern Ghana was studied to describe comprehension and retention among parents as part of the evaluation of the existing informed consent process. METHODS The(More)
Although many cross-sectional social surveys have included questions about female genital cutting status and correlated personal characteristics, no longitudinal studies have been launched that permit investigation of response biases associated with such surveys. This study draws upon the findings of a longitudinal study of women aged 15 to 49 in rural(More)
To explore the impact of social factors on place of delivery in northern Ghana. We conducted 72 in-depth interviews and 18 focus group discussions in the Upper East Region of northern Ghana among women with newborns, grandmothers, household heads, compound heads, community leaders, traditional birth attendants, traditional healers, and formally trained(More)
In the African "meningitis belt," outbreaks of meningococcal meningitis occur in cycles, representing a model for the role of host-pathogen interactions in epidemic processes. The periodicity of the epidemics is not well understood, nor is it currently possible to predict them. In our longitudinal colonization and disease surveys, we have observed waves of(More)
We describe an analysis of genome variation in 825 P. falciparum samples from Asia and Africa that identifies an unusual pattern of parasite population structure at the epicenter of artemisinin resistance in western Cambodia. Within this relatively small geographic area, we have discovered several distinct but apparently sympatric parasite subpopulations(More)
After an epidemic of serogroup A meningococcal meningitis in northern Ghana, a gradual disappearance of the epidemic strain was observed in a series of five 6-month carriage surveys of 37 randomly selected households. As serogroup A Neisseria meningitidis carriage decreased, an epidemic of serogroup X meningococcal carriage occurred, which reached 18%(More)