02 January 2023 : Database Analysis
A Retrospective Population Study of 385 191 Positive Real-Time Reverse Transcription–Polymerase Chain Reaction Tests For SARS-CoV-2 from a Single Laboratory in Katowice, Poland from April 2020 to July 2022Emilia Morawiec1ABEF*, Anna Bednarska-Czerwińska1B, Adam Pudełko2B, Anna Strychalska2B, Mateusz Broncel2B, Dorota Sagan3F, Andrzej Madej4E, Agata Jasińska-Balwierz4F, Rafał Staszkiewicz1E, Dawid Sobański1E, Dariusz Boroń1D, Filip Pokusa5F, Beniamin Grabarek1CDEF
Med Sci Monit 2023; 29:e938872
BACKGROUND: This retrospective population study identified 385 191 positive real-time reverse transcription–polymerase chain reaction (RT-PCR) tests for the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) from a single laboratory in Katowice, Poland, from April 2020 to July 2022.
MATERIAL AND METHODS: The material was nasopharyngeal, nasopharyngeal swab or bronchial lavage, and bronchoalveolar lavage (BAL) to confirm or exclude SARS-CoV-2 infection with the RT-PCR technique. Personal data are use according to the Provisions on the Protection of Personal Data by the Gyn-Centrum laboratory.
RESULTS: In 9 months of 2020, the number of SARS-CoV-2 results was 88 986; in 2021, it was 168 439, and in the first 7 months of 2022, it was 12 786. In 2020, the highest number of positive results was recorded in the third quarter (83 094 cases); 2021, in the 1st, 2nd, and 4th quarters (58 712; 37 720; and 71 753 cases, respectively), and in 2022, in the 1st quarter (127 613 cases) of the year. A positive result was observed more often in women and people aged 30-39, followed by those 40-49 years. Patients aged 10-19 years comprised the smallest population of SARS-CoV-2-positive cases.
CONCLUSIONS: In the Polish population studied, from April 2020 to July 2022, the detection rates of SARS-CoV-2 positivity were significantly higher for women than for men and in the 30-49 age group for both sexes. Also, the infection detection rate of 385 191 out of 1 332 659 patient samples, or 28.9%, supports that the Polish society adhered to public health recommendations for infection control during the COVID-19 pandemic.
Keywords: SARS-CoV-2 Variants, Adult Multisystem Inflammatory Disease, COVID-19 Related
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