tetano
Editor, Senior Moderator
Public Health
. 2021 Jul 31;198:223-229.
doi: 10.1016/j.puhe.2021.07.029. Online ahead of print.
Low seropositivity for SARS-CoV-2 antibodies among healthcare workers after the first COVID-19 pandemic wave in Greece
P Galanis[SUP] 1 [/SUP], D Kaitelidou[SUP] 2 [/SUP], P Prezerakos[SUP] 3 [/SUP], I Kotsiopoulos[SUP] 4 [/SUP], O Siskou[SUP] 5 [/SUP], O Konstantakopoulou[SUP] 6 [/SUP], C Hadjichristodoulou[SUP] 7 [/SUP], S Tsiodras[SUP] 8 [/SUP]
Affiliations
Abstract
Objectives: To estimate the prevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) seropositivity among healthcare workers (HCWs) in Greece and to identify high-risk groups in healthcare facilities.
Study design: The study design used in this study is a nationwide cross-sectional study.
Methods: Data were collected from 1 June to 9 July 2020. HCWs in the Greek National Health System were offered a free SARS-CoV-2 IgG antibody test, regardless of symptoms.
Results: Overall, 379 of 57,418 HCWs (0.66%, 95% confidence interval [CI]: 0.59-0.73) were positive for SARS-CoV-2 antibodies. The adjusted overall seroprevalence was 0.43% (95% CI: 0.35-0.51). We found that HCWs in non-reference hospitals for COVID-19 (odds ratio [OR]: 1.81, 95% CI: 1.23-2.64; P = 0.002) and reference hospitals for COVID-19 (OR: 1.66, 95% CI: 1.06-2.58; P = 0.03) were more likely to be seropositive than HCWs in primary care centres. Regarding professions, nurses (OR: 1.45, 95% CI: 1.07-1.98; P = 0.02), physicians (OR: 1.43, 95% CI: 1.06-1.93; P = 0.02), and administrative, cleaning and security staff (OR: 1.50, 95% CI: 1.09-2.06; P = 0.01) had a statistically higher chance of having a positive serology than laboratory employees.
Conclusions: The adjusted overall seroprevalence found in this study indicates a very low prevalence of SARS-CoV-2 among HCWs in Greece. This result is in line with the low incidence of COVID-19 during the first wave of the pandemic and is a direct benefit from the early implementation of lockdown.
Keywords: Antibodies; COVID-19; Greece; Healthcare workers; SARS-CoV-2; Seroprevalence.
. 2021 Jul 31;198:223-229.
doi: 10.1016/j.puhe.2021.07.029. Online ahead of print.
Low seropositivity for SARS-CoV-2 antibodies among healthcare workers after the first COVID-19 pandemic wave in Greece
P Galanis[SUP] 1 [/SUP], D Kaitelidou[SUP] 2 [/SUP], P Prezerakos[SUP] 3 [/SUP], I Kotsiopoulos[SUP] 4 [/SUP], O Siskou[SUP] 5 [/SUP], O Konstantakopoulou[SUP] 6 [/SUP], C Hadjichristodoulou[SUP] 7 [/SUP], S Tsiodras[SUP] 8 [/SUP]
Affiliations
- PMID: 34482100
- DOI: 10.1016/j.puhe.2021.07.029
Abstract
Objectives: To estimate the prevalence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) seropositivity among healthcare workers (HCWs) in Greece and to identify high-risk groups in healthcare facilities.
Study design: The study design used in this study is a nationwide cross-sectional study.
Methods: Data were collected from 1 June to 9 July 2020. HCWs in the Greek National Health System were offered a free SARS-CoV-2 IgG antibody test, regardless of symptoms.
Results: Overall, 379 of 57,418 HCWs (0.66%, 95% confidence interval [CI]: 0.59-0.73) were positive for SARS-CoV-2 antibodies. The adjusted overall seroprevalence was 0.43% (95% CI: 0.35-0.51). We found that HCWs in non-reference hospitals for COVID-19 (odds ratio [OR]: 1.81, 95% CI: 1.23-2.64; P = 0.002) and reference hospitals for COVID-19 (OR: 1.66, 95% CI: 1.06-2.58; P = 0.03) were more likely to be seropositive than HCWs in primary care centres. Regarding professions, nurses (OR: 1.45, 95% CI: 1.07-1.98; P = 0.02), physicians (OR: 1.43, 95% CI: 1.06-1.93; P = 0.02), and administrative, cleaning and security staff (OR: 1.50, 95% CI: 1.09-2.06; P = 0.01) had a statistically higher chance of having a positive serology than laboratory employees.
Conclusions: The adjusted overall seroprevalence found in this study indicates a very low prevalence of SARS-CoV-2 among HCWs in Greece. This result is in line with the low incidence of COVID-19 during the first wave of the pandemic and is a direct benefit from the early implementation of lockdown.
Keywords: Antibodies; COVID-19; Greece; Healthcare workers; SARS-CoV-2; Seroprevalence.