The outbreak of the novel coronavirus disease 2019 (COVID-19), caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has been spreading rapidly across the world. A nucleic acid real-time quantitative polymerase chain reaction (RQ-PCR) test of nasopharyngeal samples is the standard method for the diagnosis of an active SARS-CoV-2 infection. However, many limitations of the RQ-PCR tests make them unsuitable for the simple and rapid diagnosis of COVID-19 patients. Moreover, some individuals with COVID-19 present an asymptomatic infection. Thus, assessing the asymptomatic transmission of COVID-19, especially in healthcare workers (HCWs), is crucial for evaluating the efficiency of the current preventive measures. Serological tests such as enzyme-linked immunosorbent assay (ELISA) are needed to quickly identify a large number of asymptomatic carriers to prevent the further spread of the virus and assess level of possible serological immunity in a community. Between April 18 and June 17, 2020, 330 HCWs from five Madinah region-affiliated hospitals underwent a seroprevalence screening for anti-SARS-CoV-2 antibodies (immunoglobulin [Ig]M/IgA and IgG) using indirect ELISA testing. Among the 330 samples, 80 (24.24%) were positive for SARS-CoV-2 IgM/IgA and/or IgG antibodies. There were no significant differences observed in the seroprevalence among the different occupations of the HCWs (excluding the pharmacists) with respect to the percentage of their seropositive samples. The current study presented the seroprevalence of anti-SARS-CoV-2 IgM/IgA and IgG antibodies in HCWs. The regular screening of HCWs for these antibodies is necessary; subsequently, a molecular test is recommended for those with seropositive (IgM, IgA, and IgG) samples to assess their viral load and potential shedding.

Background: Celiac disease (CD) is an autoimmune condition triggered by gluten ingestion in genetically predisposed individuals. Management typically involves a strict gluten-free diet (GFD). However, there are limited data concerning adherence to GFD among adult CD patients in Saudi Arabia. Therefore, this study aimed to pilot test the assessment of knowledge, adherence to GFD, and barriers to adherence to GFD among adult celiac patients in Madinah, Saudi Arabia. Methods: Cross-sectional data were collected from 36 adults with celiac disease at King Fahad Hospital, Madinah (2021–2022). After obtaining consent, participants completed an online questionnaire covering sociodemographic data, GFD knowledge, adherence, and related barriers. Results: Only 33% of participants were aware of the Ministry of Health’s GFD support program, with 30.6% utilizing gluten-free products and 27.8% receiving financial assistance. Higher adherence scores were significantly associated with awareness of the program, reading nutrition labels, understanding GFD requirements, receiving financial support, and using separate utensils for gluten-free food preparation. The majority (58.3%) had not consulted a dietitian, and no significant association was found between dietitian consultation and GFD adherence. Poor knowledge and difficulty interpreting nutrition labels were reported as primary barriers. Conclusions: Improving public and patient awareness of the GFD and available support programs is essential in enhancing adherence among CD patients in Saudi Arabia. Healthcare providers should play a more active role in patient education and ongoing support.