Publications by authors named "Willian van Dijk"
Article Synopsis
- This study investigates the occurrence, symptom patterns, and factors influencing post-acute COVID symptoms in a sample of the Dutch population using data from the COVID RADAR app.
- The research included 1478 participants who recorded their symptoms from 40 days before to 100 days after a positive COVID test, identifying cough, loss of smell or taste, and fatigue as the most common ongoing symptoms.
- The findings revealed that about 8% of participants still had symptoms after 100 days, with symptoms grouped into three clusters and vaccination linked to a reduced risk of long-term symptoms, highlighting the complexity of post-acute COVID experiences.
Background: Fractional-dosed intradermal (i.d.) vaccination produces antibody concentrations above the proposed proxy for protection against severe disease as compared with intramuscular (i.
View Article and Find Full Text PDFIndoor sporting locations have been forced to stay closed longer than outdoor sporting locations during the lockdowns introduced during the COVID-19 pandemic. This research addresses the question whether exercising indoors does raise one's risk of infection with SARS-CoV‑2. This analysis was performed using data from the COVID RADAR app and accounted for user differences in age, vaccine status, sex, other risky behavior, SARS-CoV‑2 prevalence and quality of living environment.
View Article and Find Full Text PDFObjectives: To investigate whether the Charlson Comorbidity Index (CCI) predicted short-term and long-term mortality in patients with a bloodstream infection visiting the emergency department (ED) and compare it to the often-validated National Early Warning Score (NEWS).
Design: A retrospective cohort study.
Setting: A tertiary hospital in the Netherlands.
Background: Monitoring of symptoms and behavior may enable prediction of emerging COVID-19 hotspots. The COVID Radar smartphone app, active in the Netherlands, allows users to self-report symptoms, social distancing behaviors, and COVID-19 status daily. The objective of this study is to describe the validation of the COVID Radar.
View Article and Find Full Text PDFObjective: Non-adherence to antimicrobial guidelines in patients with bloodstream infection can result in undertreatment, overtreatment, or equivalent treatment, and could lead to suboptimal care. Our aim was to examine the association between non-adherence and appropriate coverage as well as to assess the impact of non-adherence on 30-day mortality.
Methods: We conducted a retrospective cohort study between 2012 and 2017 at a tertiary university hospital.
Article Synopsis
- The study investigates whether appropriate empirical antibiotic therapy positively affects survival rates in patients with bloodstream infections, challenging the common assumption that it does.
- Using a retrospective analysis of 1,039 patients from a Dutch university hospital, the researchers found no significant link between appropriate therapy and 30-day mortality, despite adjustments for patient characteristics.
- In a subgroup analysis focused on patients receiving antibiotic monotherapy, appropriate therapy showed a lower mortality rate, suggesting that comparisons between diverse treatment groups can obscure true associations.