PURPOSE The COVID-19 pandemic affected health care systems globally and resulted in the interruption of usual care in many health care facilities, exposing vulnerable patients with cancer to significant risks. Our study aimed to evaluate the impact of this pandemic on cancer care worldwide. METHODS We conducted a cross-sectional study using a validated web-based questionnaire of 51 items. The questionnaire obtained information on the capacity and services offered at these centers, magnitude of disruption of care, reasons for disruption, challenges faced, interventions implemented, and the estimation of patient harm during the pandemic. RESULTS A total of 356 centers from 54 countries across six continents participated between April 21 and May 8, 2020. These centers serve 716,979 new patients with cancer a year. Most of them (88.2%) reported facing challenges in delivering care during the pandemic. Although 55.34% reduced services as part of a preemptive strategy, other common reasons included an overwhelmed system (19.94%), lack of personal protective equipment (19.10%), staff shortage (17.98%), and restricted access to medications (9.83%). Missing at least one cycle of therapy by > 10% of patients was reported in 46.31% of the centers. Participants reported patient exposure to harm from interruption of cancer-specific care (36.52%) and noncancer-related care (39.04%), with some centers estimating that up to 80% of their patients were exposed to harm. CONCLUSION The detrimental impact of the COVID-19 pandemic on cancer care is widespread, with varying magnitude among centers worldwide. Additional research to assess this impact at the patient level is required.

MIC end points for the most commonly prescribed azole antifungal drug, fluconazole, can be difficult to determine because its fungistatic nature can lead to excessive “trailing” of growth during susceptibility testing by National Committee for Clinical Laboratory Standards broth macrodilution and microdilution methods. To overcome this ambiguity, and because fluconazole acts by inhibiting ergosterol biosynthesis, we developed a novel method to differentiate fluconazole-susceptible from fluconazole-resistant isolates by quantitating ergosterol production in cells grown in 0, 1, 4, 16, or 64 μg of fluconazole per ml. Ergosterol was isolated from whole yeast cells by saponification, followed by extraction of nonsaponifiable lipids with heptane. Ergosterol was identified by its unique spectrophotometric absorbance profile between 240 and 300 nm. We used this sterol quantitation method (SQM) to test 38 isolates with broth microdilution end points of ≤8 μg/ml (susceptible), 16 to 32 μg/ml (susceptible dose-dependent [SDD]), or ≥64 μg/ml (resistant) and 10 isolates with trailing end points by the broth microdilution method. No significant differences in mean ergosterol content were observed between any of the isolates grown in the absence of fluconazole. However, 18 susceptible isolates showed a mean reduction in ergosterol content of 72% after exposure to 1 μg of fluconazole/ml, an 84% reduction after exposure to 4 μg/ml, and 95 and 100% reductions after exposure to 16 and 64 μg of fluconazole/ml, respectively. Ten SDD isolates showed mean ergosterol reductions of 38, 57, 73, and 99% after exposure to 1, 4, 16, and 64 μg of fluconazole/ml, respectively. In contrast, 10 resistant isolates showed mean reductions in ergosterol content of only 25, 38, 53, and 84% after exposure to the same concentrations of fluconazole. The MIC of fluconazole, by using the SQM, was defined as the lowest concentration of the drug which resulted in 80% or greater inhibition of overall mean ergosterol biosynthesis compared to that in the drug-free control. Of 38 isolates which gave clear end points by the broth microdilution method, the SQM MIC was within 2 dilutions of the broth microdilution MIC for 33 (87%). The SQM also discriminated between resistant and highly resistant isolates and was particularly useful for discerning the fluconazole susceptibilities of 10 additional isolates which gave equivocal end points by the broth microdilution method due to trailing growth. In contrast to the broth microdilution method, the SQM determined trailing isolates to be susceptible rather than resistant, indicating that the SQM may predict clinical outcome more accurately. The SQM may provide a means to enhance current methods of fluconazole susceptibility testing and may provide a better correlation of in vitro with in vivo results, particularly for isolates with trailing end points.

BackgroundDental caries is a preventable childhood disease, but public health efforts are hampered due to limited information on associated factors in vulnerable populations. Our study was aimed at estimating the prevalence of dental caries and identifying key associated factors in four major risk domains, including socioeconomic factors, child oral health behavior and practices, child feeding practices, and dietary habits among primary school children in Saudi Arabia.MethodsA cross-sectional study design was used to recruit 578 male Saudi primary school children, aged 6–8 years, from 12 primary schools in five different regions of Riyadh. Children were clinically screened to detect carious lesions in primary teeth according to World Health Organization’s criteria. Structured self-administered questionnaire was used to collect information on social and individual factors from the parents. The odds ratios and 95% confidence intervals of associated factors for dental caries were computed using logistic regression models; key factors were identified by systematic selection process that accounted for multicollinearity and bias correction.ResultsDental caries was prevalent among children (83%, 95% confidence interval 79.7–86.0%). Individual factors, including irregular brushing, late adoption of brushing habit, consulting dentist for symptomatic treatment, lack of breast feeding, sleeping with a bottle in mouth, habit of snacking between meals, low consumption of fruits, and frequent consumption of soft drinks and flavored milk, were predominantly associated with dental caries in children, instead of socioeconomic factors (p < 0.05, adjusted R-square 80%).ConclusionDental caries were prevalent in school children, and individual factors were predominantly associated with the disease.Electronic supplementary materialThe online version of this article (10.1186/s12199-018-0750-z) contains supplementary material, which is available to authorized users.

In August 2015, the Corona outbreak caused by Middle East respiratory syndrome coronavirus (MERS-CoV) was the 9th episode since June 2012 in Saudi Arabia. Little is known about the public awareness toward the nature or prevention of the disease. The aim of this work was to assess the knowledge of the adult population in Riyadh toward the MERS-CoV. In this cross-sectional survey, a self-administrated questionnaire was distributed to randomly selected participants visiting malls in Riyadh. The questionnaire contained measurable epidemiological and clinical MERS-CoV knowledge level variables and relevant source of information. The study included 676 participants. Mean age was 32.5 (±SD 8.6) years and 353 (47.8%) were males. Almost all participants heard about the corona disease and causative agent. The study showed a fair overall knowledge (66.0%), less knowledge on epidemiological features of the disease (58.3%), and good knowledge (90.7%) on the clinical manifestation of the MERS-CoV. Internet was the major (89.0%) source of disease information, and other sources including health care providers, SMS, television, magazines and books were low rated (all <25%). In a multivariate logistic regression analysis age ≤30 years (Odds Ratio (OR)=1.647, 95%CI 1.048-2.584, P=0.030), male gender (OR=1.536, 95%CI 1.105-2.134, P=0.01), and no tertiary education (OR=1.957, 95%CI 1.264-3.030, P=0.003) were independent significant predictors of poor epidemiological knowledge. This study concludes that there was inadequate epidemiological knowledge received by the public and the reliance mostly on the clinical manifestations to recognizing the MERS-CoV disease. Comprehensive public health education programs is important to increase awareness of simple epidemiological determinants of the disease is warranted.

BackgroundHypertension and prehypertension pose significant public-health and clinical challenges for both economically developed and developing nations. Prevalence of these conditions are frequently underreported because of its often-silent nature. Population-based studies that explore the occurrence and correlates of these conditions are scarce in Saudi Arabia. This study aimed at estimating the prevalence and associated factors of hypertension and prehypertension on a representative sample of males and females living in Al-Kharj town in Saudi Arabia.MethodsCross-sectional analysis was performed from January 2016 until June 2016 by recruiting a representative sample (n = 1019; aged 18 to 67 years) of the Al Kharj population. All participants completed a self-administered questionnaire, followed by a physical examination and blood test. Statistical analysis was carried out using SPSS version 24.0 for Windows.ResultsThe prevalence of prehypertension was 66.1, 48.1 and 54.9% in male, female and all subjects, respectively. The prevalence of hypertension was 6.0, 4.2 and 4.9% in male, female and all subjects, respectively. Being overweight was associated with the highest risk of hypertension (OR = 4.98 [95% C.I. = 1.98–12.52], P = 0.001). People who were classified as class I obese had 3.5 times the risk of hypertension compared with the non-obese group (OR = 3.49 [95% C.I. = 1.42–8.63], P = 0.007). Risk of pre-hypertension was significantly lower in females (OR = 0.48 [95% C.I. = 0.32–0.71]) and tends to increase with obesity status. Gender-specific analyses found that males in the lowest education attainment level had a significantly increased risk of pre-hypertension (OR = 6.56 [95% C.I. = 1.27–33.85], P = 0.003).ConclusionThis population-based study in Saudi Arabia shows that hypertension and prehypertension are common conditions particularly among males. Overweight and obesity was associated with both conditions. In addition, lower education attainment was a significantly associated factor among males. Future prospective studies are needed to confirm the etiological nature of such associations.

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BackgroundTraditional medicine (TM) has been established as a two-edged sword. On one edge numerous forms of TM have been proven safe and effective, while on the other edge various modes of TM have been shown to be futile and potentially dangerous. Resorting to TM, especially for chronic diseases, is common world-wide and includes Saudi Arabia. Most neurological diseases are chronic. No data is available on the utilization of TM among patients with neurological disorders. We conducted this study to assess for the prevalence, pattern, perception and triggers for TM use by the adult Saudi patients with neurological disorders.MethodsA survey written in Arabic and comprised of 15 questions was used to collect data on the practice of TM among the neurology patients of King Saud University Ambulatory Clinic. The questions in the survey pertain mainly to the frequency of TM practice, its form and the patient’s opinion of this practice. The data was collected through a face to face interview by three medical students who were instructed on the survey questions prior to the launch of the study.Results292 patients completed the survey (35.9% males and 64.0% females). 67% (n = 196) of the sample used TM. Cupping or what is commonly known as “hojamah” was the most prevalent method (45.4%) followed by herbs, skin cauterization and the Reciting of the Holy Quran (42.3%, 33.7% and 20.4% respectively). The prevalence of TM use did not differ across gender (chi-sq = 2.02; p-value = 0.15), level of education (chi-sq = 4.02; p-value = 0.40), health status (chi-sq = 2.29; p-value = 0.68), age groups (chi-sq = 5.12; p-value = 0.16), or perception toward TM (chi-sq = 2.67; p-value = 0.26) in this population.ConclusionThe practice of TM is common among the neurology patients of Saudi Arabia. Cupping, herbs, and skin cauterization, which can be harmful when wrongly employed, are frequently utilized in this patient population. Measures and policies to endorse the appropriate use of TM by Saudi society must be implemented promptly.Electronic supplementary materialThe online version of this article (doi:10.1186/s12906-015-0623-6) contains supplementary material, which is available to authorized users.

As future physicians capable of controlling tobacco dependence in the population, medical students are considered a main target for tobacco control interventions. This cross-sectional study reported on the prevalence of tobacco use (cigarettes and waterpipes) and associated knowledge and behaviour among 6th-year medical students in 2009-2010 from 6 medical schools in Lebanon. The self-administered questionnaire based on the Global Health Professional Survey (GHPSS) core questions also enquired about training in tobacco cessation approaches. All enrolled students were asked to participate; the response rate was 191/354 (54.3%). The prevalence of tobacco use was 26.3% for cigarettes and 29.5% for waterpipes. Smoking waterpipes was the only significant predictor for cigarette smoking and there was no difference by sex and socioeconomic status. A minority reported ever receiving any formal training in treatment approaches for tobacco dependence. Medical schools should include tobacco dependence treatment training programmes in their curriculum and discourage tobacco use. Consommation de cigarettes, utilisation de pipes à eau et connaissances et comportements associés chez des étudiants en médecine au LibanRÉSUMÉ En tant que futurs médecins en mesure de lutter contre la dépendance tabagique dans la population, les étudiants en médecine sont considérés comme une cible majeure pour les interventions de lutte antitabac. La présente étude transversale a évalué la prévalence de la consommation de tabac (cigarettes et pipes à eau) et les connaissances et comportements associés chez des étudiants en sixième année d'étude de médecine en 2009-2010 dans six facultés de médecine au Liban. Le questionnaire auto-administré basé sur les questions centrales de l'enquête mondiale sur les professionnels de santé contenait aussi des questions sur la formation en matière de méthodes de sevrage tabagique. Tous les étudiants inscrits étaient libres de participer à cette étude ; sur 354 étudiants au total, 191 ont répondu au questionnaire (54,3 %). La prévalence de la consommation de tabac était de 26,3 % pour les cigarettes et de 29,5 % pour les pipes à eau. Fumer la pipe à eau était le seul facteur prédictif important pour la consommation de cigarettes et aucune différence n'a été observée entre les deux sexes ni les statuts économiques. Seule une minorité a déclaré avoir bénéficié d'une formation officielle sur les méthodes de traitement de la dépendance tabagique. Les facultés de médecine devraient intégrer des programmes de formation sur le traitement de la dépendance tabagique dans leur cursus universitaire et décourager la consommation de tabac.