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COVID-19 outbreak among French firefighters, Marseille, France, 2020.
Durand, Guillaume André; de Laval, Franck; de Bonet d'Oléon, Albane; Le Flem, François Xavier; Morin, Yann; Badaut, Cyril; Grard, Gilda; Brossier, Constance; Fossier, Marion; Dia, Aissata; Letois, Flavie; Geulen, Manon; Piorkowski, Géraldine; Meynard, Jean-Baptiste; Peduzzi, Frank; Leparc-Goffart, Isabelle; Pommier de Santi, Vincent.
  • Durand GA; French Armed Forces Biomedical Research Institute, National Reference Laboratory for Arboviruses, Marseille, France.
  • de Laval F; Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190-Inserm 1207), Marseille, France.
  • de Bonet d'Oléon A; French Military Health Service, French Armed Forces Centre for Epidemiology and Public Health (CESPA), Marseille, France.
  • Le Flem FX; Aix-Marseille University, INSERM, IRD, SESSTIM (Economic and Social Sciences, Health Systems, and Medical Informatics), Marseille, France.
  • Morin Y; French Military Health Service, French Armed Forces Centre for Epidemiology and Public Health (CESPA), Marseille, France.
  • Badaut C; Marseille Battalion of Navy Firefighters, 9 boulevard de Strasbourg, 13233 Marseille Cedex 20, France.
  • Grard G; French Military Health Service, French Armed Forces Centre for Epidemiology and Public Health (CESPA), Marseille, France.
  • Brossier C; Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190-Inserm 1207), Marseille, France.
  • Fossier M; Microbiology and Infectious Diseases Department, Institut de Recherche Biomédicale des Armées (IRBA), Brétigny-sur-Orge Cedex, France.
  • Dia A; French Armed Forces Biomedical Research Institute, National Reference Laboratory for Arboviruses, Marseille, France.
  • Letois F; Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190-Inserm 1207), Marseille, France.
  • Geulen M; French Military Health Service, French Armed Forces Centre for Epidemiology and Public Health (CESPA), Marseille, France.
  • Piorkowski G; French Military Health Service, French Armed Forces Centre for Epidemiology and Public Health (CESPA), Marseille, France.
  • Meynard JB; French Military Health Service, French Armed Forces Centre for Epidemiology and Public Health (CESPA), Marseille, France.
  • Peduzzi F; French Military Health Service, French Armed Forces Centre for Epidemiology and Public Health (CESPA), Marseille, France.
  • Leparc-Goffart I; French Armed Forces Biomedical Research Institute, National Reference Laboratory for Arboviruses, Marseille, France.
  • Pommier de Santi V; Unité des Virus Émergents (UVE: Aix-Marseille Univ-IRD 190-Inserm 1207), Marseille, France.
Euro Surveill ; 26(41)2021 10.
Article in English | MEDLINE | ID: covidwho-1686387
ABSTRACT
We investigated a COVID-19 outbreak at a fire station in Marseille, France. Confirmed cases were defined as individuals with positive SARS-CoV-2 reverse transcription (RT)-PCR and/or neutralising antibodies. All 85 firefighters at work during the outbreak period were included after questioning and sampled for RT-PCR and viral neutralisation assay. Twenty-three firefighters were confirmed positive, 19 of them were symptomatic, and four asymptomatic cases were confirmed by virus neutralisation. A total of 22 firefighters had specific neutralising antibodies against SARS-CoV-2. Neutralising antibodies were found in four asymptomatic and 18 symptomatic cases. Eleven symptomatic cases had high titres (≥ 180). The earliest detection of neutralising antibodies was 7 days after symptom onset, and 80% had neutralising antibodies 15 days after onset. One viral culture was positive 13 days after onset. The attack rate was 27%. We identified two introductions of the virus in this outbreak, through a presymptomatic and a paucisymptomatic case. Asymptomatic cases were not the source of a third generation of cases, although they worked without wearing a mask, indicating that asymptomatic cases did not play a significant role in this outbreak. Management and strategy based on early research of clinical signs associated with self-quarantine was effective.
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Full text: Available Collection: International databases Database: MEDLINE Main subject: Firefighters / COVID-19 Type of study: Observational study / Prognostic study Limits: Humans Country/Region as subject: Europa Language: English Journal subject: Communicable Diseases Year: 2021 Document Type: Article Affiliation country: 1560-7917.Es.2021.26.41.2001676

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Full text: Available Collection: International databases Database: MEDLINE Main subject: Firefighters / COVID-19 Type of study: Observational study / Prognostic study Limits: Humans Country/Region as subject: Europa Language: English Journal subject: Communicable Diseases Year: 2021 Document Type: Article Affiliation country: 1560-7917.Es.2021.26.41.2001676