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Al-Abri SS, Al-Wahaibi A, Al-Kindi H, Kurup PJ, Al-Maqbali A, Al-Mayahi Z, Al-Tobi MH, Al-Katheri SH, Albusaidi S, Al-Sukaiti MH, Al Balushi AYM, Abdelgadir IO, Al-Shehi N, Morkos E, Al-Maani A, Al-Rawahi B, Alyaquobi F, Alqayoudhi A, Al-Harthy K, Al-Khalili S, Al-Rashdi A, Al-Shukri I, Al Ghafri TS, Al-Hashmi F, Al Jassasi SM, Alshaqsi N, Mitra N, Al Aamry HS, Shah P, Al Marbouai HH, Al Araimi AH, Kair IM, Al Manji AM, Almallak AS, Al Alawi FK, Vaidya V, Muqeetullah M, Alrashdi H, Al Jamoudi SSN, Alshaqsi A, Al Sharji A, Al Shukeiri H, Al-Abri B, Al-Rawahi S, Al-Lamki SH, Al-Manji A, Al-Jardani A. Seroprevalence of SARS-CoV-2 antibodies in the general population of Oman: results from four successive nationwide sero-epidemiological surveys. Int J Infect Dis 2021; 112:269-277. [PMID: 34601146 PMCID: PMC8482550 DOI: 10.1016/j.ijid.2021.09.062] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 09/24/2021] [Accepted: 09/24/2021] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE To assess the seroprevalence of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) in Oman and longitudinal changes in antibody levels over time within the first 11 months of the coronavirus disease 2019 (COVID-19) pandemic. METHODS This nationwide cross-sectional study was conducted as a four-cycle serosurvey using a multi-stage stratified sampling method from July to November 2020. A questionnaire was used and included demographics, history of acute respiratory infection and list of symptoms, COVID-19 contact, previous diagnosis or admission, travel history and risk factors. RESULTS In total, 17,457 participants were surveyed. Thirty percent were female and 66.3% were Omani. There was a significant increase in seroprevalence throughout the study cycles, from 5.5% (4.8-6.2%) in Cycle 1 to 22% (19.6-24.6%) in Cycle 4. There was no difference in seroprevalence between genders, but significant differences were found between age groups. There was a transition of seroprevalence from being higher in non-Omanis than Omanis in Cycle 1 [9.1% (7.6-10.9%) vs 3.2% (2.6-3.9%)] to being higher in Omanis than non-Omanis in Cycle 4 [24.3% (21.0-27.9%) vs 16.8% (14.9-18.9%)]. There was remarkable variation in the seroprevalence of SARS-CoV-2 according to governorate. Close contacts of people with COVID-19 had a 96% higher risk of having the disease [adjusted odds ratio (AOR) 1.96, 95% confidence intervals (CI) 1.64-2.34]. Labourers had 58% higher risk of infection compared with office workers (AOR 1.58, 95% CI 1.04-2.35). CONCLUSION This study showed a wide variation in the spread of SARS-CoV-2 across governorates in Oman, with higher estimated seroprevalence in migrants in the first two cycles. Prevalence estimates remain low and are insufficient to provide herd immunity.
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Affiliation(s)
- Seif Salem Al-Abri
- Directorate General for Disease Surveillance and Control, Ministry of Health Muscat, Oman.
| | - Adil Al-Wahaibi
- Directorate General for Disease Surveillance and Control, Ministry of Health Muscat, Oman
| | - Hanan Al-Kindi
- Central Public Health Laboratories, Directorate General for Disease Surveillance and Control, Ministry of Health Muscat, Oman
| | - Padmamohan J Kurup
- Department of Disease Surveillance and Control, Directorate General of Health Services, Muscat Governorate, Ministry of Health, Muscat, Oman
| | - Ali Al-Maqbali
- Department of Disease Surveillance and Control, Directorate General of Health Services, North Batinah Governorate, Ministry of Health, Sohar, Oman
| | - Zayid Al-Mayahi
- Department of Disease Surveillance and Control, Directorate General of Health Services, South Batinah Governorate, Ministry of Health, Rustaq, Oman
| | - Mohammed Hamed Al-Tobi
- Department of Disease Surveillance and Control, Directorate General of Health Services, Al-Dhakhiliya Governorate, Ministry of Health, Nizwa, Oman
| | - Salim Habbash Al-Katheri
- Department of Disease Surveillance and Control, Directorate General of Health Services, Dhofar Governorate, Ministry of Health, Salalah, Oman
| | - Sultan Albusaidi
- Department of Disease Surveillance and Control, Directorate General of Health Services, North Sharqiah Governorate, Ministry of Health, Ibra, Oman
| | - Mahmood Humaid Al-Sukaiti
- Department of Disease Surveillance and Control, Directorate General of Health Services, Al-Dhahira Governorate, Ministry of Health, Ibri, Oman
| | - Ahmed Yar Mohammed Al Balushi
- Department of Disease Surveillance and Control, Directorate General of Health Services, Al-Buraimi Governorate, Ministry of Health, Buraimi, Oman
| | - Iyad Omer Abdelgadir
- Department of Disease Surveillance and Control, Directorate General of Health Services, South Sharqiah Governorate, Ministry of Health, Sur, Oman
| | - Nawal Al-Shehi
- Department of Disease Surveillance and Control, Directorate General of Health Services, Musandam Governorate, Ministry of Health, Khasab, Oman
| | - Essam Morkos
- Department of Disease Surveillance and Control, Directorate General of Health Services, Al-Wusta Governorate, Ministry of Health, Haima, Oman
| | - Amal Al-Maani
- Directorate General for Disease Surveillance and Control, Ministry of Health Muscat, Oman
| | - Bader Al-Rawahi
- Directorate General for Disease Surveillance and Control, Ministry of Health Muscat, Oman
| | - Fatma Alyaquobi
- Directorate General for Disease Surveillance and Control, Ministry of Health Muscat, Oman
| | - Abdullah Alqayoudhi
- Directorate General for Disease Surveillance and Control, Ministry of Health Muscat, Oman
| | - Khalid Al-Harthy
- Directorate General for Disease Surveillance and Control, Ministry of Health Muscat, Oman
| | - Sulien Al-Khalili
- Directorate General for Disease Surveillance and Control, Ministry of Health Muscat, Oman
| | - Azza Al-Rashdi
- Central Public Health Laboratories, Directorate General for Disease Surveillance and Control, Ministry of Health Muscat, Oman
| | - Intisar Al-Shukri
- Central Public Health Laboratories, Directorate General for Disease Surveillance and Control, Ministry of Health Muscat, Oman
| | - Thamra S Al Ghafri
- Directorate General of Health Services, Muscat Governorate, Ministry of Health, Muscat, Oman
| | - Fatma Al-Hashmi
- Department of Disease Surveillance and Control, Directorate General of Health Services, North Batinah Governorate, Ministry of Health, Sohar, Oman
| | - Saeed Mussalam Al Jassasi
- Department of Disease Surveillance and Control, Directorate General of Health Services, Al-Dhahira Governorate, Ministry of Health, Ibri, Oman
| | - Nasser Alshaqsi
- Department of Disease Surveillance and Control, Directorate General of Health Services, South Batinah Governorate, Ministry of Health, Rustaq, Oman
| | - Nilanjan Mitra
- Department of Disease Surveillance and Control, Directorate General of Health Services, Musandam Governorate, Ministry of Health, Khasab, Oman
| | - Humaid Suhail Al Aamry
- Department of Disease Surveillance and Control, Directorate General of Health Services, Al-Dhakhiliya Governorate, Ministry of Health, Nizwa, Oman
| | - Parag Shah
- Department of Disease Surveillance and Control, Directorate General of Health Services, North Sharqiah Governorate, Ministry of Health, Ibra, Oman
| | - Hanan Hassan Al Marbouai
- Department of Disease Surveillance and Control, Directorate General of Health Services, Al-Buraimi Governorate, Ministry of Health, Buraimi, Oman
| | - Amany Hamed Al Araimi
- Department of Disease Surveillance and Control, Directorate General of Health Services, South Sharqiah Governorate, Ministry of Health, Sur, Oman
| | - Ismail Mohammed Kair
- Department of Disease Surveillance and Control, Directorate General of Health Services, Dhofar Governorate, Ministry of Health, Salalah, Oman
| | - Asim Mohammed Al Manji
- Department of Disease Surveillance and Control, Directorate General of Health Services, Muscat Governorate, Ministry of Health, Muscat, Oman
| | - Ahmed Said Almallak
- Department of Disease Surveillance and Control, Directorate General of Health Services, Dhofar Governorate, Ministry of Health, Salalah, Oman
| | - Fatma Khamis Al Alawi
- Department of Disease Surveillance and Control, Directorate General of Health Services, South Sharqiah Governorate, Ministry of Health, Sur, Oman
| | - Vidyanand Vaidya
- Department of Disease Surveillance and Control, Directorate General of Health Services, North Batinah Governorate, Ministry of Health, Sohar, Oman
| | - Muhammad Muqeetullah
- Department of Disease Surveillance and Control, Directorate General of Health Services, Al-Buraimi Governorate, Ministry of Health, Buraimi, Oman
| | - Hanan Alrashdi
- Department of Disease Surveillance and Control, Directorate General of Health Services, North Sharqiah Governorate, Ministry of Health, Ibra, Oman
| | - Saud Said Nassir Al Jamoudi
- Department of Disease Surveillance and Control, Directorate General of Health Services, Al-Dhakhiliya Governorate, Ministry of Health, Nizwa, Oman
| | - Asila Alshaqsi
- Department of Disease Surveillance and Control, Directorate General of Health Services, South Batinah Governorate, Ministry of Health, Rustaq, Oman
| | - Abdullah Al Sharji
- Department of Disease Surveillance and Control, Directorate General of Health Services, Muscat Governorate, Ministry of Health, Muscat, Oman
| | - Hamida Al Shukeiri
- Department of Disease Surveillance and Control, Directorate General of Health Services, Muscat Governorate, Ministry of Health, Muscat, Oman
| | - Badr Al-Abri
- Directorate General for Disease Surveillance and Control, Ministry of Health Muscat, Oman
| | | | - Said H Al-Lamki
- Directorate General of Primary Health Care, Ministry of Health, Muscat, Oman
| | - Abdulla Al-Manji
- Directorate General for Disease Surveillance and Control, Ministry of Health Muscat, Oman
| | - Amina Al-Jardani
- Central Public Health Laboratories, Directorate General for Disease Surveillance and Control, Ministry of Health Muscat, Oman
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