• Matthias Claus, Gerold Koch, Daniel Frambach, Arne Jonas Warnke, and Stefan Webendörfer.
• Corporate Health Management, BASF SE, Ludwigshafen am Rhein, GERMANY.
• Dtsch. Med. Wochenschr. 2023 Jul 1; 148 (13): e65e75e65-e75.

IntroductionWith the present paper we aim to describe the experience of a large chemical company in tackling the COVID-19 pandemic. Specifically, we describe the timing and content of implemented measures and outline the course of the pandemic from the company's perspective.MethodsWe describe the infection protection measures and the pandemic course at the company's main site in Ludwigshafen (Germany) from March 2020 to May 2022. Company-specific data on the date of reporting an infection, suspected place of infection, number of close contacts, and the employee group were used to calculate 7-day-incidences and visualized, among other things, by means of a plant map (active infections) and a network chart (chains of infection). In addition, a weighted average of the incidences from districts close to the plant (weighted by the number of resident employees within the district) was calculated using publicly available data by the Robert Koch Institute and compared with the course of company-specific incidences.ResultsAt the end of follow-up on 31st May 2022, 9,379 infections with SARS-CoV-2 had been recorded in employees and 758 more in leasing staff, including 368 (4%) and 84 (11%) suspected infections at the workplace/on-site, respectively. The course of 7-day incidences among employees was mainly consistent with that in the surrounding districts. The incidence of suspected infections on-site/at the workplace remained predominantly at a comparatively low level below 100 new infections over 7 days/100,000.DiscussionThe continuous monitoring and analysis of new SARS-CoV-2 cases among employees provides valuable information for the effective management of protective measures in the company. It enables a targeted response to changes in the number of new cases on the plant site by tightening or relaxing protective measures.The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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