1. Seroprevalence of antibodies to SARS-CoV-2 among blood donors in the early months of the pandemic in Saudi Arabia
- Author
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Sami Almudarra, Abdullah Almudaiheem, Abdullah Al-jurayyan, Haleema Ali Alserehi, Safar Almalki, Abdullah Alotaibi, Amal H. Alfaifi, Jaffar A. Al-Tawfiq, Amaal Rabie Alruwaily, Hani Jokhdar, Abdullah M. Assiri, Abdullah T. Khojah, Ayman Banjar, Hind Mohammed Al-Mutlaq, Rehab Habeeb Alaswad, Ada Alqunaibet, Abdullah Alkhashan, Faisal Alsaif, Shaza Karim Almolad, Yousef Abuhaimed, Khaled Alabdulkareem, and Saeed Awad M. Al-Qahtani
- Subjects
Adult ,Male ,0301 basic medicine ,Microbiology (medical) ,medicine.medical_specialty ,Adolescent ,Coronavirus disease 2019 (COVID-19) ,Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) ,education ,030106 microbiology ,Saudi Arabia ,Seroprevalence ,Antibodies, Viral ,Blood donors ,Article ,lcsh:Infectious and parasitic diseases ,Serology ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Seroepidemiologic Studies ,Environmental health ,IgG antibody ,Pandemic ,Epidemiology ,medicine ,Humans ,lcsh:RC109-216 ,030212 general & internal medicine ,health care economics and organizations ,Aged ,Immunoassay ,biology ,SARS-CoV-2 ,Transmission (medicine) ,business.industry ,COVID-19 ,General Medicine ,Middle Aged ,Cross-Sectional Studies ,Infectious Diseases ,Immunoglobulin G ,biology.protein ,Female ,Antibody ,business - Abstract
Highlights • Among blood donors in May 2020, te overall seroprevalence of anti-SARS-CoV-2 antibodies was 1.4% • Non-citizens had higher prevalence compared to citizens (odds ratio 13.6, p = 0.001). • There was geographic variation in seroprevalence of anti-SARS-CoV-2 antibodies within Saudi Arabia, Background Serologic testing provides better understanding of SARS-CoV-2 prevalence and its transmission. This study is the first investigation of the prevalence of antibodies to SARS-CoV-2 among blood donors in Saudi Arabia. Objective To estimate the seroprevalence of anti-SARS-CoV-2 antibodies among blood donors in Saudi Arabia during the early phase of the current pandemic. Methods Serology results and epidemiological data were analyzed for 837 adult blood donors, with no confirmed SARS-CoV-2 infection, in Saudi Arabia from 20 to 25 May 2020. Seroprevalence was determined using electrochemical immunoassay for detecting anti-SARS-CoV-2 antibodies. Results The overall seroprevalence of anti-SARS-CoV-2 antibodies was 1.4% (12/837). Non-citizens had higher prevalence compared to citizens (odds ratio 13.6, p = 0.001). Having a secondary education as the highest level of education was also significantly associated with high seroprevalence compared to higher education (odds ratio 6.8, p = 0.005). The data showed that the highest seroprevalence was in Makkah (8.1%), Madinah (4.1% with an OR of 0.48 (95% CI: 0.12-1.94), Jeddah (2.3%; OR 0.27; 95%CI: 0.31-2.25), and Qassim (2.9 %, OR: 0.34; 95%CI: 0.04-2.89) and these were not statistically different from the seroprevalence in Makkah region. Conclusions At the early stage of the pandemic in Saudi Arabia, the seroprevalence of antibodies to SARS-CoV-2 among blood donors was low but was higher among non-citizens These findings showed that non-citizens and the less educated may be less attentive to preventive measures. Monitoring seroprevalence trend over time require repeated sampling.
- Published
- 2021