Prevalence of Chemosensitive Neurological Disorders of Smell and Taste and Association with Blood Groups in SARS-CoV-2 Patients: Cross-Sectional Study.

The Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) has caused a highly challenging and threatening situation worldwide. SARS-CoV-2 patients develop various clinical symptoms. The olfactory and taste dysfunctions are potential neurological manifestations among SARS-CoV-2 patients; however, their relationship with blood groups has rarely been investigated. This study aimed to investigate the prevalence of chemosensitive neurological disorders of smell and taste and their association with blood groups in SARS-CoV-2 patients. The present cross-sectional study was performed in the Department of Pathology, and Physiology, College of Medicine, King Saud University, Riyadh, Saudi Arabia. A well-structured, self-administered questionnaire was designed and distributed through social media platforms. A total of 922 Saudi and non-Saudi adults aged 18 years or older participated in the study. Out of 922 participants, the number of people who had anosmia was 309 (33.5%), 211 (22.9%) had hyposmia, and 45 (4.8%) had dysosmia. Moreover, 180 (19.52%) had ageusia, 47 (5.1%) and 293 (31.8%) had hypogeusia and dysgeusia, respectively. Among all the participants, 565 (61.27%) had smell-related disorders and 520 (56.39%) participants had taste-related clinical symptoms. The occurrence of anosmia and ageusia was relatively high among females compared to males (p = 0.024). The prevalence of smell-related disorders was 25.0% (230) and taste-related disorders was 23.21% (214) among the study participants with blood group O compared to all other blood group (A, B, and AB) participants who have smell allied disorders 30.69% (283), and taste allied disorders 27.98% (258). The prevalence of chemosensitive neurological disorders involving impaired smell and taste was higher in SARS-CoV-2 patients. These clinical symptoms were common among the participants with blood group type O compared to all other ABO blood group types. The role of certain demographic characteristics was consistent throughout multiple studies, notably with female gender and young adults.

Public Perception towards the COVID-19 Vaccine in Riyadh, Saudi Arabia.

The vaccination campaign against COVID-19 is an essential public health strategy to reach herd immunity, eradicate diseases, and prevent a pandemic. This study aimed to investigate the acceptance rate of the COVID-19 vaccine among people in Riyadh, Saudi Arabia. This cross-sectional study was conducted in the Department of Pathology, College of Medicine, King Saud University, Riyadh, Saudi Arabia. Out of the 922 participants involved, 294 (31.9%) were male and 628 (68.1%) were female, with a mean age of 30-49 years. A bilingual, self-administered, computer-based questionnaire was designed and distributed through social media platforms. In total, 900 participants (97.6%) showed a high acceptance rate of the vaccine. The vaccine acceptance rate was higher among people aged 60 years and above than in other age groups (p = 0.008) and single individuals compared to other groups (p = 0.003). The results reveal a relatively high acceptance level of the COVID-19 vaccine among study participants. Importantly, regression analysis results show that female gender and elderly participants are more likely to accept the COVID-19 vaccine than their counterparts. Moreover, the main factor that influenced the participants' perception of the COVID-19 vaccine was the proper timely scientific recommendations.