The Institute for Innovation in Biotechnology and Industry (IIBI) warned that the presence of bacteria resistant to common antibiotics in the country’s main rivers poses a serious health risk.
The institution recommended strengthening environmental monitoring, preventing self-medication, and improving wastewater treatment.
The discovery stems from research on the Ozama, Isabela, Yaque del Norte, and Yaque del Sur rivers, where microorganisms such as Escherichia coli, Klebsiella, Pseudomonas, and Acinetobacter were detected
These bacteria, classified by the World Health Organization (WHO) as priority pathogens due to their drug resistance, are associated with intestinal, urinary, respiratory, and skin infections.
The study was conducted by a team of young Dominican scientists from IIBI, in collaboration with Intec, Isfodosu, and ISA universities, led by Dr. Edian F. Franco and Professor Luis O. Maroto.
The research employed whole-genome sequencing and metagenomics techniques, an approach that goes beyond conventional microbiology and allows for identifying not only which bacteria are present, but also their capabilities. This approach facilitates the tracking of contamination routes, the identification of critical discharges, and the guidance of mitigation actions.
When these organisms are dispersed in the environment, the chances of them reaching food, drinking water, or people who use rivers for bathing or work increase.
In the case of infection, treatments may become more protracted, more expensive, and less effective.
The IIBI, an institution directed by engineer Osmar Olivo, calls on citizens to care for and rescue our water sources, remembering that river water is vital to the health, agricultural production, the economy, and daily life of all Dominicans.
Findings by area
In Ozama and Isabela, both in densely populated urban areas, resistant bacteria linked to domestic and industrial discharges were detected.
In Yaque del Norte, a route was traced from the springs to agricultural and urban areas, verifying how the presence of intestinal bacteria such as E. coli, Klebsiella, and Enterobacter increases.
In Yaque del Sur, sediments revealed DNA from Vibrio cholerae (cholera) and Salmonella (gastroenteritis), which poses a risk if the water is used without treatment.
A problem with daily impact
River water is crucial for cooking, washing, irrigating crops, and sustaining the economy. If antibiotics lose effectiveness, common health problems could turn into serious and costly illnesses.
The WHO warns that the misuse of antibiotics accelerates bacterial resistance. Therefore, the IIBI insists on the urgency of implementing immediate measures that include responsible antibiotic use, adequate wastewater treatment, and strengthening environmental monitoring.
Science and youth training
Along with the research leaders, undergraduate and graduate students from Intec, Isfodosu, and ISA participated. Among them were Irene Zulay Ortiz Confesor, Lázaro M. Acosta Rivera, Argeny Lorenzo Ovando, Camila Del Rosario, Albert Duarte, Víctor V. Calderón, and Roberto Bonnelly, among others.
The project, funded by the MESCYT–FONDOCyT (National Meteorological Service of the Basin of Cyclone and the Basin of Cyclone), has generated international publications, and complete monitoring data from the Yaque River will be released in the coming months.