Clinical manifestations of COVID-19 versus other upper respiratory tract infections in pediatric patients.

OBJECTIVES: To explore the differences between COVID-19 and upper respiratory tract infections (URTI) in the pediatric population, emphasizing smell and taste disturbances. METHODS: A case-control study included 468 patients, 234 with COVID-19 (cases) and 234 with URTI (controls) at a tertiary hospital, Riyadh, Saudi Arabia, from 2020-2021. Patients with bacterial URTI, lower tract respiratory infections, and speech or developmental delays were excluded. Statistical analysis was carried out using Statistical Analysis System, 9.2 version. A p-value of ≤0.05 was considered significant. RESULTS: The male-to-female ratio was almost equal, with a mean age of 9.90±2.34. Multivariable logistic regression analysis showed that a change in taste significantly increases the probability of COVID-19 by 21.98 times. On the other hand, sore throat (81.5%), dyspnea (63.5%), nasal obstruction (72.7%), and otalgia significantly (74.8%) decrease the likelihood of COVID-19. CONCLUSION: Taste disturbances increase the probability of COVID-19 infections, whereas sore throat, dyspnea, nasal obstruction, and otalgia increase the likelihood of other URTIs. The described differences might aid physicians in their differential diagnosis and treatment during the pandemic.

Mouth rinses efficacy on salivary SARS-CoV-2 viral load: A randomized clinical trial.

Considering the global trend to confine the COVID-19 pandemic by applying various preventive health measures, preprocedural mouth rinsing has been proposed to mitigate the transmission risk of SARS-CoV-2 in dental clinics. The study aimed to investigate the effect of different mouth rinses on salivary viral load in COVID-19 patients. This study was a single-center, randomized, double-blind, six-parallel-group, placebo-controlled clinical trial that investigated the effect of four mouth rinses (1% povidone-iodine, 1.5% hydrogen peroxide, 0.075% cetylpyridinium chloride, and 80 ppm hypochlorous acid) on salivary SARS-CoV-2 viral load relative to the distilled water and no-rinse control groups. The viral load was measured by quantitative reverse transcription PCR (RT-qPCR) at baseline and 5, 30, and 60 min post rinsing. The viral load pattern within each mouth rinse group showed a reduction overtime; however, this reduction was only statistically significant in the hydrogen peroxide group. Further, a significant reduction in the viral load was observed between povidone-iodine, hydrogen peroxide, and cetylpyridinium chloride compared to the no-rinse group at 60 min, indicating their late antiviral potential. Interestingly, a similar statistically significant reduction was also observed in the distilled water control group compared to the no-rinse group at 60 min, proposing mechanical washing of the viral particles through the rinsing procedure. Therefore, results suggest using preprocedural mouth rinses, particularly hydrogen peroxide, as a risk-mitigation step before dental procedures, along with strict adherence to other infection control measures.

Knowledge, awareness, and vaccination compliance of hepatitis B among medical students in Riyadh's governmental universities.

BACKGROUND: Hepatitis B is a blood-borne infectious liver disease caused by the Hepatitis B Virus (HBV) and it is best prevented by immunization. Due to occupational exposure, medical students have an increased risk of contracting HBV. Therefore, it is essential for all medical students to have good knowledge about HBV and to complete their HBV vaccinations. AIMS: The aim of this study was to assess and compare HBV knowledge, awareness, and vaccination compliance among pre-clinical medical students in four universities. SETTINGS AND DESIGN: A cross-sectional study was conducted in September 2018 at the College of Medicine of four governmental universities: King Saud Bin Abdulaziz University for Health Sciences, King Saud University, Princess Noura university, and Imam Mohammed bin Saud Islamic University, in Riyadh, Saudi Arabia. METHODS AND MATERIALS: Two-hundred-sixty-three pre-clinical medical students completed a questionnaire with sections about demographics, HBV awareness, knowledge, and vaccination compliance. STATISTICAL ANALYSIS USED: The data was transferred to Excel and SPSS version 22 was used for statistical analysis. A significance level of P < 0.05 was considered statistically significant. RESULTS: The overall knowledge about HBV and vaccination compliance were poor. KSU students had the highest vaccination compliance (n = 52, 54.2%) and KSAU-HS the lowest (n = 19, 23,8%). The most-cited reasons for noncompliance were "forgetting about the vaccine" and "busy schedule". CONCLUSION: Overall, most of the participants had poor HBV knowledge and vaccine compliance. Therefore, we recommend the implementation of pre-clinical vaccine checking and the addition of an infectious disease awareness and prevention program.