Background: In developing countries, many babies are born at home and the umbilical cord commonly becomes infected during the first week after birth, and can be deadly. Cleansing of the cord with a low-cost antiseptic like chlorhexidine may reduce the risk of these infections. Little is known, however, about the frequency of chlorhexidine cleansing needed to impact upon the overall presence of bacteria on the stump, or regarding the changes in bacteria during the first week of life when most cord infections occur.

Objectives: We will describe the profile of bacteria colonizing the umbilical cord stump of infants in rural Bangladesh and examine the role of topical chlorhexidine in altering colonization and progress of infection. We will compare the overall and bacteria-specific rate of colonization of the cord stump between infants receiving chlorhexidine cleansing of their cord through the first day or first week of life. We will also quantify the relationship between colonization of the cord stump with specific pathogens and the presence and severity of signs of umbilical cord infection (pus, redness, swelling) among these newborns.

Potential Impact: More information is needed on the impact of single versus repeated applications of chlorhexidine to the cord stump, as the number of cleansing may substantially influence the feasibility of widespread scale-up in many populations. The data generated from this proposed study will guide the most appropriate design of this simple intervention and will help inform specific treatment protocols for effective management of infants with signs of umbilical cord infections.