Muriel Ramírez-Santana
Biographic Data
| ID | 6797812 |
|---|---|
| NAME | Muriel Ramírez-Santana |
| GIVEN NAMES | Muriel |
| FAMILY NAME | Ramírez-Santana |
| SIGNATURE | RAMÍREZ-SANTANA M |
| AFFILIATIONS | Universidad Católica del Norte |
| ORCID | 0000-0002-3642-6965 |
| VERIFIED | Yes |
| TOTAL WORKS | 12 |
| TOTAL CITATIONS | 1 |
| AUTHOR COUNT | 12 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2015 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 1 |
Geospatial disparities in post-pandemic Sars-CoV-2 vaccination
While Chile achieved one of the world’s highest and most equitable SARS-CoV-2 vaccination coverages during the pandemic, less is known about the post-pandemic stage. This study examines within-country geospatial disparities in COVID-19 vaccination uptake and their socio-demographic determinants in two urban areas of Chile. A population-based survey conducted in May 2024 collected individual data on vaccination status and socio-demographic charact…
Population-based seroprevalence survey
Overall, vaccine acceptance is high. However, the acceptance of the last two doses was below expectations and showed heterogeneous geographical distribution. Adulthood is the most important predictor of vaccine uptake. Participants underestimated their level of risk. Risk communication must be improved, especially for risk groups, to help them perceive themselves as beneficiaries of vaccination. Efforts should be made to disseminate information o…
Overcoming Health Inequities
Background: In unequal economies, the spread of the first waves of the COVID-19 was usually associated with low socioeconomic status of individuals and their families. Chile exemplified this. By mid-2020, Chile had one of the highest SARS-CoV-2 infection rates in the world predominantly in poorer areas. A year later, the country launched a universal vaccination campaign based on the national strategy of immunization established in 1975. By 2022, …
Acceptance of Social Networking Sites by Older People before and after Covid-19 Confinement
This study aims to examine the capacity of the Theory of Planned Behaviour (TPB) to explain the intention to use social networking sites by older people in two time periods, before and after confinement due to the COVID-19 epidemic, as well as the evolution of effects (paths) over time of TPB's determinants. Based on interviews from samples of 384 and 383 elderly Chilean adults collected before and after confinement, the evolution of the effects …
Inverse Association between Omega-3 Index and Severity of Covid-19
Background: Omega-3 fatty acids enhance immune response and modulate inflammation. This study aimed to determine the relationship between omega-3 fatty acid status and the severity of SARS-CoV-2 infection. Methods: Using a case−control design, we compared hospitalized patients with severe SARS-CoV-2 infection (cases, n = 73) with a group of ambulatory patients with mild SARS-CoV-2 infection (controls, n = 71). No patients were vaccinated against …
A Positive Relationship between Exposure to Heavy Metals and Development of Chronic Diseases
Chile is a mining country, where waste mining is frequently found in the vicinity of inhabited areas. To explore the association between metal exposure and alterations in glucose metabolism, inflammatory status, and oxidative stress in individuals with chronic exposure to metals, a cross-sectional study was performed with 25 volunteers, between 45-65 years old. Inductive coupled plasma mass spectrometry (ICP-MS) was used to measure urinary levels…
Omega-3 Index and Clinical Outcomes of Severe Covid-19
The potentially detrimental effects of the worldwide deficiency of Omega-3 fatty acids on the COVID-19 pandemic have been underestimated. The Omega-3 Index (O3I), clinical variables, biometric indices, and nutritional information were directly determined for 74 patients with severe COVID-19 and 10 healthy quality-control subjects. The relationships between the OI3 and mechanical ventilation (MV) and death were analyzed. Results: Patients with COV…
Social Network Communications in Chilean Older Adults
The growth of older adults in new regions poses challenges for public health. We know that these seniors live increasingly alone, and this impairs their health and general wellbeing. Studies suggest that social networking sites (SNS) can reduce isolation, improve social participation, and increase autonomy. However, there is a lack of knowledge about the characteristics of older adult users of SNS in these new territories. Without this informatio…
Explaining the Use of Social Network Sites as Seen by Older Adults
Previous studies suggest that older adults are living increasingly alone and without the company of their close relatives, which cause them depression problems and a detriment to their health and general wellbeing. The use of social network sites (SNS) allows them to reduce their isolation, improve their social participation, and increase their autonomy. Although the adoption of various information technologies by older adults has been studied, s…
Vulnerabilidad social y necesidades de salud de población inmigrante en el norte de Chile
Se propuso conocer la vulnerabilidad sanitaria y necesidades de salud de personas inmigrantes en Chile, a través de un estudio cualitativo exploratorio. Los hallazgos indican que su vulnerabilidad estaría dada por su condición irregular, trabajo precario y bajos ingresos, cuando lo tienen. Las afecciones de salud son morbilidad común, de salud mental y reproductiva. La aculturación y actitud positiva hacia el autocuidado serían factores protector…
Predicting Condom Use among Undergraduate Students Based on the Theory of Planned Behaviour, Coquimbo, Chile, 2016
Background: Sexually transmitted infections and pregnancy in adolescents are acknowledged public health problems in many countries. Although it is known that the proper use of condoms allows avoiding these health problems, their use in Chile is still limited, for unknown reasons. Objective : Based on planned behavioural theory, the aim was to validate a behaviour model regarding condom use by measuring the influence of the variables that predict …
Assessing biomarkers and neuropsychological outcomes in rural populations exposed to organophosphate pesticides in Chile – study design and protocol
This study protocol has been implemented successfully during the time frames mentioned above for seasons 2011, 2012 and 2013-2014
Vulnerabilidad social y necesidades de salud de población inmigrante en el norte de Chile
Se propuso conocer la vulnerabilidad sanitaria y necesidades de salud de personas inmigrantes en Chile, a través de un estudio cualitativo exploratorio. Los hallazgos indican que su vulnerabilidad estaría dada por su condición irregular, trabajo precario y bajos ingresos, cuando lo tienen. Las afecciones de salud son morbilidad común, de salud mental y reproductiva. La aculturación y actitud positiva hacia el autocuidado serían factores protector…
Assessing biomarkers and neuropsychological outcomes in rural populations exposed to organophosphate pesticides in Chile – study design and protocol
This study protocol has been implemented successfully during the time frames mentioned above for seasons 2011, 2012 and 2013-2014
Predicting Condom Use among Undergraduate Students Based on the Theory of Planned Behaviour, Coquimbo, Chile, 2016
Background: Sexually transmitted infections and pregnancy in adolescents are acknowledged public health problems in many countries. Although it is known that the proper use of condoms allows avoiding these health problems, their use in Chile is still limited, for unknown reasons. Objective : Based on planned behavioural theory, the aim was to validate a behaviour model regarding condom use by measuring the influence of the variables that predict …
Explaining the Use of Social Network Sites as Seen by Older Adults
Previous studies suggest that older adults are living increasingly alone and without the company of their close relatives, which cause them depression problems and a detriment to their health and general wellbeing. The use of social network sites (SNS) allows them to reduce their isolation, improve their social participation, and increase their autonomy. Although the adoption of various information technologies by older adults has been studied, s…
Vulnerabilidad social y necesidades de salud de población inmigrante en el norte de Chile
Se propuso conocer la vulnerabilidad sanitaria y necesidades de salud de personas inmigrantes en Chile, a través de un estudio cualitativo exploratorio. Los hallazgos indican que su vulnerabilidad estaría dada por su condición irregular, trabajo precario y bajos ingresos, cuando lo tienen. Las afecciones de salud son morbilidad común, de salud mental y reproductiva. La aculturación y actitud positiva hacia el autocuidado serían factores protector…
Social Network Communications in Chilean Older Adults
The growth of older adults in new regions poses challenges for public health. We know that these seniors live increasingly alone, and this impairs their health and general wellbeing. Studies suggest that social networking sites (SNS) can reduce isolation, improve social participation, and increase autonomy. However, there is a lack of knowledge about the characteristics of older adult users of SNS in these new territories. Without this informatio…
A Positive Relationship between Exposure to Heavy Metals and Development of Chronic Diseases
Chile is a mining country, where waste mining is frequently found in the vicinity of inhabited areas. To explore the association between metal exposure and alterations in glucose metabolism, inflammatory status, and oxidative stress in individuals with chronic exposure to metals, a cross-sectional study was performed with 25 volunteers, between 45-65 years old. Inductive coupled plasma mass spectrometry (ICP-MS) was used to measure urinary levels…
Omega-3 Index and Clinical Outcomes of Severe Covid-19
The potentially detrimental effects of the worldwide deficiency of Omega-3 fatty acids on the COVID-19 pandemic have been underestimated. The Omega-3 Index (O3I), clinical variables, biometric indices, and nutritional information were directly determined for 74 patients with severe COVID-19 and 10 healthy quality-control subjects. The relationships between the OI3 and mechanical ventilation (MV) and death were analyzed. Results: Patients with COV…
Acceptance of Social Networking Sites by Older People before and after Covid-19 Confinement
This study aims to examine the capacity of the Theory of Planned Behaviour (TPB) to explain the intention to use social networking sites by older people in two time periods, before and after confinement due to the COVID-19 epidemic, as well as the evolution of effects (paths) over time of TPB's determinants. Based on interviews from samples of 384 and 383 elderly Chilean adults collected before and after confinement, the evolution of the effects …
Inverse Association between Omega-3 Index and Severity of Covid-19
Background: Omega-3 fatty acids enhance immune response and modulate inflammation. This study aimed to determine the relationship between omega-3 fatty acid status and the severity of SARS-CoV-2 infection. Methods: Using a case−control design, we compared hospitalized patients with severe SARS-CoV-2 infection (cases, n = 73) with a group of ambulatory patients with mild SARS-CoV-2 infection (controls, n = 71). No patients were vaccinated against …
Overcoming Health Inequities
Background: In unequal economies, the spread of the first waves of the COVID-19 was usually associated with low socioeconomic status of individuals and their families. Chile exemplified this. By mid-2020, Chile had one of the highest SARS-CoV-2 infection rates in the world predominantly in poorer areas. A year later, the country launched a universal vaccination campaign based on the national strategy of immunization established in 1975. By 2022, …
Population-based seroprevalence survey
Overall, vaccine acceptance is high. However, the acceptance of the last two doses was below expectations and showed heterogeneous geographical distribution. Adulthood is the most important predictor of vaccine uptake. Participants underestimated their level of risk. Risk communication must be improved, especially for risk groups, to help them perceive themselves as beneficiaries of vaccination. Efforts should be made to disseminate information o…
Geospatial disparities in post-pandemic Sars-CoV-2 vaccination
While Chile achieved one of the world’s highest and most equitable SARS-CoV-2 vaccination coverages during the pandemic, less is known about the post-pandemic stage. This study examines within-country geospatial disparities in COVID-19 vaccination uptake and their socio-demographic determinants in two urban areas of Chile. A population-based survey conducted in May 2024 collected individual data on vaccination status and socio-demographic charact…
Medicine (10 works) · Computer Science (4 works) · Coronavirus disease 2019 (COVID-19 (4 works) · Environmental health (4 works) · Internal Medicine (4 works) · Psychology (4 works) · Public health (4 works) · Body mass index (3 works) · COVID-19 epidemiological studies (3 works) · Disease (3 works)