{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,15]],"date-time":"2025-12-15T18:49:45Z","timestamp":1765824585086,"version":"3.48.0"},"reference-count":44,"publisher":"BMJ","issue":"8","license":[{"start":{"date-parts":[[2021,8,2]],"date-time":"2021-08-02T00:00:00Z","timestamp":1627862400000},"content-version":"unspecified","delay-in-days":1,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001821","name":"Vienna Science and Technology Fund","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001821","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Open"],"accepted":{"date-parts":[[2021,6,24]]},"published-print":{"date-parts":[[2021,8]]},"abstract":"<jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>We explore the importance of SARS-CoV-2 sentinel surveillance testing in primary care during a regional COVID-19 outbreak in Austria.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Design<\/jats:title>\n                    <jats:p>Prospective cohort study.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Setting<\/jats:title>\n                    <jats:p>A single sentinel practice serving 22\u2009829 people in the ski-resort of Schladming-Dachstein.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Participants<\/jats:title>\n                    <jats:p>All 73 patients presenting with mild-to-moderate flu-like symptoms between 24 February and 03 April, 2020.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Intervention<\/jats:title>\n                    <jats:p>Nasopharyngeal sampling to detect SARS-CoV-2 using real-time reverse transcriptase-quantitative PCR (RT-qPCR).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Outcome measures<\/jats:title>\n                    <jats:p>We compared RT-qPCR at presentation with confirmed antibody status. We split the outbreak in two parts, by halving the period from the first to the last case, to characterise three cohorts of patients with confirmed infection: early acute (RT-qPCR reactive) in the first half; and late acute (reactive) and late convalescent (non-reactive) in the second half. For each cohort, we report the number of cases detected, the accuracy of RT-qPCR, the duration and variety of symptoms, and the number of viral clades present.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Twenty-two patients were diagnosed with COVID-19 (eight early acute, seven late acute and seven late convalescent), 44 patients tested SARS-CoV-2 negative and 7 were excluded. The sensitivity of RT-qPCR was 100% among all acute cases, dropping to 68.1% when including convalescent. Test specificity was 100%. Mean duration of symptoms for each group were 2\u2009days (range 1\u20134) among early acute, 4.4\u2009days (1\u20137) among late acute and 8\u2009days (2\u201312) among late convalescent. Confirmed infection was associated with loss of taste. Acute infection was associated with loss of taste, nausea\/vomiting, breathlessness, sore throat and myalgia; but not anosmia, fever or cough. Transmission clusters of three viral clades (G, GR and L) were identified.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>RT-qPCR testing in primary care can rapidly and accurately detect SARS-CoV-2 among people with flu-like illness in a heterogeneous viral outbreak. Targeted testing in primary care can support national sentinel surveillance of COVID-19.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/bmjopen-2020-045225","type":"journal-article","created":{"date-parts":[[2021,8,2]],"date-time":"2021-08-02T12:23:21Z","timestamp":1627907001000},"page":"e045225","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":3,"title":["Rapid, early and accurate SARS-CoV-2 detection using RT-qPCR in primary care: a prospective cohort study (REAP-1)"],"prefix":"10.1136","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1321-2566","authenticated-orcid":false,"given":"Werner","family":"Leber","sequence":"first","affiliation":[{"name":"Wolfson Institute of Population Health, Centre for Primary Care, Queen Mary University of London, London, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Oliver","family":"Lammel","sequence":"additional","affiliation":[{"name":"Praxis Dr Lammel, Ramsau am Dachstein, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Monika","family":"Redlberger-Fritz","sequence":"additional","affiliation":[{"name":"Center for Virology, Medical University of Vienna, Vienna, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Maria Elisabeth","family":"Mustafa-Korninger","sequence":"additional","affiliation":[{"name":"Medizinisch-chemisches Labor Dr. Mustafa OG, Salzburg, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Reingard Christina","family":"Glehr","sequence":"additional","affiliation":[{"name":"Institute of General Practice and Evidence-based Health Services Research, Medical University of Graz, Graz, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jeremy","family":"Camp","sequence":"additional","affiliation":[{"name":"Center for Virology, Medical University of Vienna, Vienna, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0044-8396","authenticated-orcid":false,"given":"Benedikt","family":"Agerer","sequence":"additional","affiliation":[{"name":"CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alexander","family":"Lercher","sequence":"additional","affiliation":[{"name":"CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alexandra","family":"Popa","sequence":"additional","affiliation":[{"name":"CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jakob-Wendelin","family":"Genger","sequence":"additional","affiliation":[{"name":"CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Thomas","family":"Penz","sequence":"additional","affiliation":[{"name":"CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stephan","family":"Aberle","sequence":"additional","affiliation":[{"name":"Center for Virology, Medical University of Vienna, Vienna, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christoph","family":"Bock","sequence":"additional","affiliation":[{"name":"CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andreas","family":"Bergthaler","sequence":"additional","affiliation":[{"name":"CeMM Research Center for Molecular Medicine of the Austrian Academy of Sciences, Vienna, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Karin","family":"Stiasny","sequence":"additional","affiliation":[{"name":"Center for Virology, Medical University of Vienna, Vienna, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eva-Maria","family":"Hochstrasser","sequence":"additional","affiliation":[{"name":"Praxis Dr Lammel, Ramsau am Dachstein, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christian","family":"Hoellinger","sequence":"additional","affiliation":[{"name":"Paracelsus Medical Private University, Salzburg, Austria"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6980-2103","authenticated-orcid":false,"given":"Andrea","family":"Siebenhofer","sequence":"additional","affiliation":[{"name":"Institute of General Practice and Evidence-based Health Services Research, Medical University of Graz, Graz, Austria"},{"name":"Goethe University Frankfurt, 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