Poor water, sanitation, and hygiene in low-income countries may help fuel the emergence of deadly pathogens

A new study suggests that Escherichia coli and other disease-causing microbes are passing easily between humans and animals in Cambodia, a country where clean water, sanitation and hygienic controls are lacking in many regions. The continuous exchange, along with unregulated antibiotic use, leads to the emergence and spread of drug-resistant E. coli, the authors say.