My research focuses on understanding the determinants of water, sanitation and hygiene (WASH) and WASH-related behaviours and developing and evaluating WASH / WASH behaviour change interventions in households, communities, and institutions.

I serve as Deputy Director for LSHTM's Environmental Health Group, LSHTM's research group focusing on the links between Water, Sanitation, and Hygiene (WASH) and health.

I serve as the Director of the COVID-19 Hygiene Hub, a free service housed at LSHTM to support actors to rapidly design, share, adapt and evaluate hygiene interventions to combat coronavirus. 

Recent research interest include:

Hygiene and infection prevention in health care facilities: I am the Principal Investigator for the study Changing Hygiene around Maternal Priorities (CHAMP) which will design and test an innovative approach to hand hygiene behaviour change during labour and delivery in Cambodia. I previously led research on hand hygiene practices during delivery in Nigeria in partnership with Save the Children.

Domestic Pathogen Exposures: I am Principal Investgator / Co-Investigator for a number of studies understanding the determinants and impact of child exposures to enteric pathogens in the domestic environments. I am the Home Environment lead for the GCRF Action Against Stunting Hub. I lead formative and qualiative research on behavioural, social, and contextual determinants of food hygiene practices in Kenya that informed an infant food hygiene intervention that will be evaluated in the Safe Start Trial.

WASH In Schools: I am the Principal Investigator for impact evaluations of school-based WASH and WASH behaviour change interventions in Bangladesh, the Phillipines, and a forth-coming evaluation of urban shool WASH programs in Ethiopia and India.

I hold a PhD in International Health - Social and Behavioural Interventions from Johns Hopkins Bloomberg School of Public Health and completed my MPH in Global Environmental Health at the Rollins School of Public Health, Emory University.