A5004634324- Pharmaceutical and Antibiotic Environmental Impacts
- Salmonella and Campylobacter epidemiology
- Antibiotic Resistance in Bacteria
- Food Safety and Hygiene
- Parasitic Infections and Diagnostics
- Vibrio bacteria research studies
- Listeria monocytogenes in Food Safety
- Fecal contamination and water quality
- SARS-CoV-2 detection and testing
- Child Nutrition and Water Access
- Biosensors and Analytical Detection
- Identification and Quantification in Food
- Amoebic Infections and Treatments
- Antibiotic Use and Resistance
- Genomics and Phylogenetic Studies
- Escherichia coli research studies
- Organic Food and Agriculture
- Plant Toxicity and Pharmacological Properties
- Microbial Community Ecology and Physiology
- Business, Innovation, and Economy
- Veterinary Equine Medical Research
- Animal Disease Management and Epidemiology
- Sesquiterpenes and Asteraceae Studies
- Clostridium difficile and Clostridium perfringens research
- Bacteriophages and microbial interactions
Universidad Andrés Bello
2016-2025
Millennium Initiative for Collaborative Research on Bacterial Resistance
2019-2024
Pontificia Universidad Católica de Valparaíso
2024
University of California, Davis
2012-2016
Environmental exposure to active pharmaceutical ingredients (APIs) can have negative effects on the health of ecosystems and humans. While numerous studies monitored APIs in rivers, these employ different analytical methods, measure APIs, ignored many countries world. This makes it difficult quantify scale problem from a global perspective. Furthermore, comparison existing data, generated for studies/regions/continents, is challenging due vast differences between methodologies employed....
Abstract Antimicrobial resistance (AMR) is a major threat to global health. Understanding the emergence, evolution, and transmission of individual antibiotic genes (ARGs) essential develop sustainable strategies combatting this threat. Here, we use metagenomic sequencing analyse ARGs in 757 sewage samples from 243 cities 101 countries, collected 2016 2019. We find regional patterns resistomes, these differ between subsets corresponding drug classes are partly driven by taxonomic variation....
ABSTRACT Surface waters are considered ecological habitats where Salmonella enterica can persist and disseminate to fresh produce production systems. This study aimed explore the genomic profiles of S. serotypes Typhimurium, Newport, Infantis from surface in Chile, Mexico, Brazil collected between 2019 2022. We analyzed whole genomes 106 S . 161 113 isolates. Our phylogenetic analysis exhibited distinct groupings isolates by their respective countries except for a notable case involving...
ABSTRACT This study examined the diversity and persistence of Salmonella in surface waters agricultural regions Brazil, Chile, Mexico. Research groups (three 2019–2020 five 2021–2022) conducted a long-term survey water across 5–8 months annually ( n = 30 monthly). On-site, each team filtered 10-L samples with modified Moore Swabs to capture Salmonella, which were then isolated identified using conventional microbiological techniques. isolates sequenced on Illumina platforms. was present...
Abstract Background In low- and middle-income countries, the community burden of antibiotic-resistant Gram-negative bacteria (AR-GNB) colonization is high. Understanding factors influencing AR-GNB crucial for controlling antimicrobial resistance. Methods We conducted a cohort study from December 2019 to November 2020 with community-dwelling adults in Molina, an agricultural town Central Chile. collected questionnaires fecal samples every two weeks six months identify by extended-spectrum...
The dissemination of antibiotic-resistant bacteria (ARB) from water used for crop irrigation to vegetables is poorly studied. During a year, five farmer markets in city Central Chile were visited, and 478 vegetable samples (parsleys, corianders, celeries, lettuces, chards, beets) collected. Simultaneously, 32 collected two rivers which are irrigate the produced area. Resistant Enterobacterales isolated identified. Colistin resistance gene mcr-1 extended spectrum β-lactamases (ESBL)...
Consumption of contaminated produce remains a leading cause foodborne illness. Increasingly, growers are altering agricultural practices and farm environments to manage food-safety hazards, but these changes often result in substantial economic, social, environmental costs. Here, we present comprehensive evidence synthesis evaluating the efficacy soil, non-crop vegetation, animal, landscape, irrigation water management strategies aimed at reducing produce-safety risk North America. We...
Cryptosporidium and Giardia are of public health importance, with recognized transmission through recreational waters. Therefore, both can contaminate marine waters shellfish, potential to infect mammals in nearshore ecosystems. A 2-year study was conducted evaluate the presence mussels located at two distinct coastal areas California, namely, (i) land runoff plume sites (ii) locations near sea lion haul-out sites, as well feces California lions (CSL) (Zalophus californianus) by use direct...
Salmonella enterica is a highly infectious microorganism responsible for many outbreaks reported in equine hospitals. Outbreaks are characterized by high morbidity and mortality rates, nosocomial transmission to other patients, zoonotic hospital personnel, even closure of facilities. In this study, 545 samples (environmental hospitalized patients) were collected monthly during 1-year period from human animal contact surfaces an that received local international horses. A total 22 isolates...
Salmonella enterica is one of the main causes gastrointestinal disease worldwide. Wild birds are capable harboring a variety serovars, which could have an important role in epidemiology salmonellosis humans and production animals. We tested 519 fecal samples from raptors aquatic different regions central (three rehabilitation centers for wildlife coastal area) southern areas Chile Salmonella. All were obtained 2015 2017, covering all four seasons. was isolated 12 (2%) analyzed, two...
Before December 2020, Antarctica had remained free of Covid-19 cases. The main concern during the pandemic was limited health facilities available at Antarctic stations to deal with disease, as well potential impact SARS-CoV-2 on wildlife through reverse zoonosis. In 60 cases emerged in Chilean stations, disrupting summer campaign ongoing isolation needs. RNA detected wastewater several scientific stations. Antarctica, treated is discharged directly into seawater. No studies currently...
Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) CONICYT FONDECYT 11160116 FAO, Regional Office for Latin America and the Caribbean ANID Millennium Science Initiative/Millennium Initiative Collaborative Research on Bacterial Resistance, MICROB-R NCN17_081
Background: Worldwide, aquaculture is considered as a hotspot environment for antimicrobial resistance (AMR) due to the intense use of antibiotics in its productive systems. Chile second largest producer farmed salmon worldwide, and tons are used control bacterial diseases, such Salmon Rickettsial Syndrome (SRS) Bacterial Kidney Disease (BKD). However, studies determining risk consuming fillets that have been treated with during production limited. Consulting leading experts field could...
Antibiotic resistance is currently an extensive medical challenge worldwide, with global numbers increasing steadily. Recent data have highlighted wastewater treatment plants as a reservoir of genes. The impact these findings for human health can best be summarized using One Health concept. However, the molecular mechanisms impacting spread not been carefully evaluated. Bacterial viruses, that bacteriophages, recently shown to important mediators bacterial genes in environmental milieus and...
Freshwater bodies receive waste, feces, and fecal microorganisms from agricultural, urban, natural activities. In this study, the probable sources of contamination were determined. Also, antibiotic resistant bacteria (ARB) detected in two main rivers central Chile. Surface water samples collected 12 sampling sites Maipo (n = 8) Maule Rivers 4) every 3 months, August 2017 until April 2019. To determine level, coliforms quantified using most number (MPN) method source was determined by...
Abstract Objective —To estimate the time of seroconversion to New Jersey serotype vesicular stomatitis virus (VSNJV) in sentinel cattle dairy herds located at high and low elevations southern Mexico determine factors associated with an increase VSNJV transmission. Animals —471 4 free-ranging Mexico. Procedures —Serum samples from all were screened by use serum neutralization (SN) tests for antibodies against VSNJV. Cattle SN titers < 1:20 designated as tested every 10 weeks (SN titer ≥...
Introducción: La cuantificación de SARS-CoV-2 en aguas residuales es una herramienta que permite determinar la tendencia circulación viral un área geográfica determinada.