Scientists from the Institute for Health Sciences Research at the National University of Asunción (IICS-UNA) have completed Paraguay's first genomic map of the bacterium methicillin-resistant Staphylococcus aureus (MRSA), considered a superbug. The study, conducted by researchers Rosa Guillén and Claudia Salinas, has raised alarms in the health sector by revealing the pathogen's expansion, adaptability, and resistance mechanisms within the country, especially among pediatric patients.
The research identified, for the first time, the circulation of three predominant major genetic families within Paraguayan territory: the clonal complexes CC30, CC5, and CC8. A detailed analysis of these clones detected multiple resistance and virulence genes never before recorded locally, demonstrating the superbug's concerning capacity for adaptation within the child population.
MRSA infections can rapidly progress to highly complex conditions such as pneumonia, osteomyelitis, and sepsis, posing a critical risk to the most vulnerable populations. The analyzed strains show resistance to penicillin, in addition to a progressive increase in resistance to other antimicrobials, which reduces the available therapeutic options for doctors. Although drugs like vancomycin remain effective in severe cases, experts warn that the window for effective action is becoming increasingly limited.
The study's authors emphasize that having this genetic information is a fundamental step toward urgently activating epidemiological surveillance and early detection systems in Paraguay, cementing the work's status as the first genomic study of MRSA conducted in the country.