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Prevalence and clinical profile of SARS-CoV-2 infection among farmworkers in Monterey County, California: June-November, 2020
Joseph A Lewnard; Ana M Mora; Oguchi Nkwocha; Katherine Kogut; Stephen Rauch; Norma Morga; Samantha Hernandez; Marcus P Wong; Karen Huen; Kristin Andrejko; Nicholas P Jewell; Kimberly L Parra; Nina Holland; Eva Harris; Maximiliano Cuevas; Brenda Eskenazi.
  • Joseph A Lewnard; University of California Berkeley
  • Ana M Mora; University of California, Berkeley
  • Oguchi Nkwocha; Clinica de Salud del Valle de Salinas
  • Katherine Kogut; University of California, Berkeley
  • Stephen Rauch; University of California, Berkeley
  • Norma Morga; Clinica de Salud del Valle de Salinas
  • Samantha Hernandez; University of California, Berkeley
  • Marcus P Wong; University of California, Berkeley
  • Karen Huen; University of California, Berkeley
  • Kristin Andrejko; University of California at Berkeley
  • Nicholas P Jewell; University of California, Berkeley
  • Kimberly L Parra; University of Arizona
  • Nina Holland; University of California, Berkeley
  • Eva Harris; University of California, Berkeley
  • Maximiliano Cuevas; Clinica de Salud del Valle de Salinas
  • Brenda Eskenazi; University of California, Berkeley
Preprint Dans Anglais | medRxiv | ID: ppmedrxiv-20248894
ABSTRACT
As essential personnel, United States farmworkers have continued working in-person throughout the COVID-19 pandemic. We undertook prospective surveillance of SARS-CoV-2 infection and antibody prevalence among farmworkers in Californias Salinas Valley from 15 June to 30 November, 2020. Over this period, we observed 22.1% (1514/6864) positivity for current SARS-CoV-2 by nucleic acid detection among farmworkers tested at federally-qualified migrant and community health clinics, as compared to 17.2% (1255/7305) among other adults from the same communities (risk ratio, 1.29; 95% confidence interval, 1.20-1.37). In a nested study enrolling 1,115 farmworkers, prevalence of current infection was 27.7% among farmworkers reporting [≥]1 potential COVID-19 symptom, and 7.2% among farmworkers without symptoms (adjusted odds ratio 4.17; 2.86-6.09). Prevalence of anti-SARS-CoV-2 IgG antibodies increased from 10.5% (6.0-18.4%) between 16 July-31 August to 21.2% (16.6-27.4%) between 1-30 November. The high observed prevalence of infection among farmworkers underscores the need for vaccination and other preventive interventions.
Texte intégral: Disponible Collection: Preprints Base de données: medRxiv langue: Anglais Année: 2021 Type de document: Preprint
Texte intégral: Disponible Collection: Preprints Base de données: medRxiv langue: Anglais Année: 2021 Type de document: Preprint