IU Indianapolis ScholarWorks :: Browsing by Author "Al‑Tawfiq, Jaffar A."

Browsing by Author "Al‑Tawfiq, Jaffar A."

Now showing 1 - 10 of 14

Adverse events following administration of COVID-19 vaccines in Saudi Arabia
(Springer Nature, 2022-11-15) Alqahtani, Saleh; Jokhdar, Hani; Al‑Tawfiq, Jaffar A.; Al‑Otaibi, Salah; Assiri, Abdullah; Almudarra, Sami; Alabdulkareem, Khaled; Haji, Alhan; Medicine, School of Medicine
Previous studies investigated the frequency of different adverse events of COVID-19 vaccines. However, this study compares these adverse events between the two main COVID-19 vaccines used in Saudi Arabia (Pfizer-BioNTech and Oxford-AstraZeneca) using telemedicine technology. A cross-sectional study was conducted among 958 individuals, 7 days after receiving either Pfizer-BioNTech or Oxford-AstraZeneca vaccines during June 2021. Immediate adverse events were reported by 1.04% and 2.09% for Pfizer-BioNTech and Oxford-AstraZeneca vaccines, respectively, with no serious events. Recipients of Pfizer-BioNTech vaccine had a higher percentage of local adverse events (24.8% versus 9.8% in AstraZeneca vaccine). The most common reported systemic adverse events in both vaccines respectively were general fatigue (23.1% and 25.1%), fever (18.5% and 27.2%), myalgia (20.6% and 20.3%), and headache (15.2% and 17.2%). No significant difference was recorded between both vaccines regarding overall systemic adverse events; however, they were more frequent following the first dose of AstraZeneca vaccine compared to Pfizer-BioNTech vaccine, while the reverse was observed for the second dose. Adverse events were more frequent in females and younger age groups for both vaccines. Most of systemic and local adverse events were mild in nature. Further cohort studies are recommended to investigate the long-term adverse events of COVID-19 vaccines.
Carbapenem use correlates with percentage of patients with COVID-19 in intensive care units
(Springer, 2023) AlBahrani, Salma; Almogbel, Feras; Alanazi, Wafa; Almutairi, Saleh Hamdi; Alanazi, Mohammed; Maximos, Sameh; Azaiez, Faten; Osman, Assim; Almuthen, Sharifah; Jebakumar, Arulanantham Zechariah; Al‑Tawfiq, Jaffar A.; Medicine, School of Medicine
Background: The first wave of COVID-19 pandemic may have significantly impacted antimicrobial consumption in hospitals. The objective of this study was to assess the evolution of carbapenem consumption and describe the implemented measures during the first year of the COVID-19 pandemic. Methods: We calculated carbapenem consumption for all the hospital and for intensive care units (ICU) for three periods: baseline (before COVID-19 cases, January 2019-February 2020), and the period of COVID-19 cases as a pre-intervention (March-August 2020) and a post-intervention phase (September 2020-December 2021). Results: During the study period, the percentage of admitted COVID-19 patients increased in the months of April-August of 2020 (pre-intervention period) from 5 to 26% of total admitted patients. The consumption of carbapenems (DDD/1000 patient days) increased from a mean of 67.1 at baseline to 142.9 pre-intervention. In ICUS, there was an increase in the mean from 125.7 to 240.8 DDD/1000 patient days. After interventions, the DDD/1000 patient days decreased by 49.5% overall the hospital and by 36% in ICUs. For the post-intervention period, there was a correlation between COVID-19 cases and carbapenem usage in the ICU but not the overall hospital. Conclusion: An increase in the antimicrobial consumption during the first wave of COVID-19 pandemic was noticed, especially in the ICU. Antimicrobial stewardship programs are essential to reduce consumption rate.
The Emergence of the Omicron (B.1.1.529) SARS-CoV-2 Variant: What is the Impact on the Continued Pandemic?
(Springer, 2022) Al‑Tawfiq, Jaffar A.; Hoang, Van‑Thuan; Bui, Nhat Le; Chu, Dinh‑Toi; Memish, Ziad A.; Medicine, School of Medicine
Epidemiology of Dermatophytes Isolated from Clinical Samples in a Hospital in Eastern Saudi Arabia: A 20-Year Survey
(Springer Nature, 2021-12) Alshehri, Bashayer Ali; Alamri, Aisha M.; Rabaan, Ali A.; Al‑Tawfiq, Jaffar A.; Medicine, School of Medicine
Background: Dermatophytes are group of fungi that cause superficial infections via enzymes that degrade keratin in human skin. Several factors, including climate, gender, age, lifestyle, human migration, cultural habits, and socioeconomic status influence the prevalence of dermatophyte infections. We analyzed the prevalence of dermatophyte isolates in a hospital in Eastern Saudi Arabia from 2000 to 2019. Methods: The data on fungal cultures were obtained from the Laboratory Information System of the Mycology Laboratories at Johns Hopkins Aramco Healthcare, and were used for the analysis. Fungal isolates were examined microscopically for the presence of specialized hyphal structures and conidia. The Vitek® MS microbial identification system (biomerieux) was used if the culture type was not identified microscopically. Results: Among the 10,021 samples analyzed, 3040 (30.33%) were positive for fungi and only 398 (3.97%) were dermatophytes. Microsporum species was the most common dermatophyte accounting for 50.5% (n = 201) followed by trichophyton with 36.9% (n = 147). The most common positive samples were scrapping (251, 63%) and hair (68, 17%). Culture positivity relative to the age groups revealed a cluster of positive dermatophyte species in children < 10 years of age with 215 (54%) of all cases and among 10-19 years of age with 60 (15) of the cases (p < 0.001). Microsporum species were the prevalent dermatophytes in patients < 10 years of age, while Epidermophyton species were the most frequent dermatophyte species in age groups 10-19, 20-29, and 30-39 years. However, Trichophyton species were the most frequent dermatophyte species in individuals 70-79 years. The percentage of Microsporum and Trichophyton species decreased significantly over time (p < 0.001). In addition, there was a significant seasonal variation in relation to Trichophyton species. A comparison between the most frequent species showed that there was no difference in relation to gender, but there was a difference in relation to the specimen type and age group. Conclusion: Dermatophytosis was common among children and adolescent with the most common samples were scrapping and hair. There was a significant reduction in Microsporum and Trichophyton species over time.
Extracorporeal membrane oxygenation support for SARS-CoV-2: a multi-centered, prospective, observational study in critically ill 92 patients in Saudi Arabia
(BMC, 2021-12-09) Alhumaid, Saad; Al Mutair, Abbas; Alghazal, Header A.; Alhaddad, Ali J.; Al‑Helal, Hassan; Al Salman, Sadiq A.; Alali, Jalal; Almahmoud, Sana; Alhejy, Zulfa M.; Albagshi, Ahmad A.; Muhammad, Javed; Khan, Amjad; Sulaiman, Tarek; Al‑Mozaini, Maha; Dhama, Kuldeep; Al‑Tawfiq, Jaffar A.; Rabaan, Ali A.; Medicine, School of Medicine
Background: Extracorporeal membrane oxygenation (ECMO) has been used as a rescue strategy in patients with severe with acute respiratory distress syndrome (ARDS) due to SARS-CoV-2 infection, but there has been little evidence of its efficacy. Objectives: To describe the effect of ECMO rescue therapy on patient-important outcomes in patients with severe SARS-CoV-2. Methods: A case series study was conducted for the laboratory-confirmed SARS-CoV-2 patients who were admitted to the ICUs of 22 Saudi hospitals, between March 1, 2020, and October 30, 2020, by reviewing patient's medical records prospectively. Results: ECMO use was associated with higher in-hospital mortality (40.2% vs. 48.9%; p = 0.000); lower COVID-19 virological cure (41.3% vs 14.1%, p = 0.000); and longer hospitalization (20.2 days vs 29.1 days; p = 0.000), ICU stay (12.6 vs 26 days; p = 0.000) and mechanical ventilation use (14.2 days vs 22.4 days; p = 0.000) compared to non-ECMO group. Also, there was a high number of patients with septic shock (19.6%) and multiple organ failure (10.9%); and more complications occurred at any time during hospitalization [pneumothorax (5% vs 29.3%, p = 0.000), bleeding requiring blood transfusion (7.1% vs 38%, p = 0.000), pulmonary embolism (6.4% vs 15.2%, p = 0.016), and gastrointestinal bleeding (3.3% vs 8.7%, p = 0.017)] in the ECMO group. However, PaO2 was significantly higher in the 72-h post-ECMO initiation group and PCO2 was significantly lower in the 72-h post-ECMO start group than those in the 12-h pre-ECMO group (62.9 vs. 70 mmHg, p = 0.002 and 61.8 vs. 51 mmHg, p = 0.042, respectively). Conclusion: Following the use of ECMO, the mortality rate of patients and length of ICU and hospital stay were not improved. However, these findings need to be carefully interpreted, as most of our cohort patients were relatively old and had multiple severe comorbidities. Future randomized trials, although challenging to conduct, are highly needed to confirm or dispute reported observations.
From Pandemicity to Endemicity: The Journey of SARS-CoV-2
(Springer, 2022) Al‑Tawfiq, Jaffar A.; Chu, Dinh‑Toi; Hoang, Van‑Thuan; Memish, Ziad A.; Medicine, School of Medicine
High seroprevalence of SARS-CoV-2 among high-density communities in Saudi Arabia
(Springer, 2022-06) Almudarra, Sami; Kamel, Shady; Saleh, Eman; Alaswad, Rehab; Alruwaily, Amaal; Almowald, Shaza; Alqunaibet, Ada Mohammed; Almudiaheem, Abdullah; Almutlaq, Hind; Alserehi, Haleema; Almalki, Safar; Bahlaq, Mohannad Abdulhafiz; Alsahafi, Abdullah Jaber; Alsaif, Faisal; Khojah, Abdullah T.; Al‑Tawfiq, Jaffar A.; Asiri, Sari Ibrahim; Assiri, Abdullah; Jokhdar, Hani; Medicine, School of Medicine
Background: The Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection had been investigated utilizing serology. Materials and methods: This community-based sero-survey was carried out in the neighborhoods of three cities in Saudi Arabia. Results: Of 5629 participants, 2766 (49.1%) were women; and 2148 (38.1%) were 18-34 years of age, and 3645 (64.7%) were from South East Asia. Positive serology was seen in 2825 (50.2% (95% CI: 48.8-51.5%) for SARS-CoV-2 anti-S1 IgG antibodies by ECLIA. Being in the age category of 18-34 years and being from Eastern Mediterranean Region (country A) were associated with higher COVID-19 seropositivity with estimated odds ratio of 1.3 [95% CI 1.1-1.8] and 2.5 [95% CI 1.1.5-4.2] respectively. Gender, social status, education, nationality, symptoms, presence of comorbidities and activity style were positively associated with increased seropositivity. Factors associated negatively with the rate of seropositivity were higher education and having outdoor activity with estimated OR of 0.92 [95% CI 0.46-0.95] and 0.59 [95% CI 0.47-0.74], respectively. Conclusion: The study showed high seroprevalence of SARS-CoV-2 among high density population. Health education campaigns should target middle-aged, those with low education, those living in lower standards and indoor workers.
Implication of the emergence of the delta (B.1.617.2) variants on vaccine effectiveness
(Springer, 2022-06) Al‑Tawfiq, Jaffar A.; Koritala, Thoyaja; Alhumaid, Saad; Barry, Mazin; Alshukairi, Abeer N.; Temsah, Mohamad‑Hani; Al Mutair, Abbas; Rabaan, Ali; Tirupathi, Raghavendra; Gautret, Philippe; Medicine, School of Medicine
Introduction: COVID-19 vaccines have been developed to compact the current SARS-CoV-2 pandemic and have been administered to people all over the world. These vaccines have been quite effective in reducing the possibility of severe illness, hospitalization and death. However, the recent emergence of Variants of Concern specifically the delta variant, B.1.617.2, had resulted in additional waves of the pandemic. Methods: We aim to review the literature to understand the transmission and disease severity, and determine the efficacy of the current COVID-19 vaccines. We searched Pubmed, Scopus, and Embase till August 4th 2021, and used the search terms "delta variant", "vaccinations"," breakthrough infections", and "neutralizing antibody". For the meta-analysis, 21 studies were screened in particular and five articles (148,071 cases) were included in the study, and only four were analyzed in the meta-analysis. Results: In this review, both in vitro and in vivo studies showed significant reductions in neutralization rates against delta variants for vaccinated individuals and convalescent patients with prior history of COVID-19. However, There was a lower incidence of infection with SARS-CoV-2 due to Delta variant was found after the second dose of Pfizer-BioNTech, Oxford-AstraZeneca and Moderna vaccines. Conclusion: In fully vaccinated individuals, symptomatic infection with the delta variant was significantly reduced, and therefore, vaccinations play an important role to assist the fight against delta variant.
Initial viral cycle threshold values in patients with COVID-19 and their clinical significance
(BMC, 2022-06-28) AlBahrani, Salma; Alghamdi, Mohammed; Zakary, Nawaf; Jebakumar, Arulanantham Zechariah; AlZahrani, Samirah Jamaan; ElGezery, Mohamed Hany; Abdallah, Khaled Omar; Al‑Tawfiq, Jaffar A.; Medicine, School of Medicine
Background: The connection between initial viral cycle threshold (Ct) values of the SARS-CoV-2 with symptoms and hospital course is not clearly studied. Methods: This is a retrospective study of hospitalized COVID-19 patients from Jun 1st 2020 to March 30th, 2021 examining the relationship between initial viral cycle threshold (Ct) values of SARS-CoV-2 as obtained from nasopharyngeal samples. The clinical presentations and outcomes were analyzed in relation to the initial Ct values. Results: The study included 202 hospitalized COVID-19 patients with a mean age (± SD) of 54.75 (± 15.93) and 123 (60.9%) males and 79 (39.1%) females. Of all the patients, the most frequent comorbidity was diabetes mellitus (95; 47%) and the most frequent symptoms were fever (148; 73.3%) and cough (141; 69.8%). There was no significant difference in relation to underlying conditions, clinical presentation, radiographic and laboratory data among those with low, medium and high Ct values. The mean Ct values showed no statistical change over the 10-month study period. Conclusions: Initial SARS-CoV-2 Ct values did not show any association with clinical symptoms and did not predict the need for mechanical intubation or death.
Measles Outbreaks in the Eastern Mediterranean Region: Urgent Need for Strengthened Vaccination Efforts
(Springer, 2024) Al‑Tawfiq, Jaffar A.; Memish, Ziad A.; Medicine, School of Medicine

Browsing by Author "Al‑Tawfiq, Jaffar A."

Results Per Page

Sort Options