Occupation and SARS-CoV-2 infection risk among workers during the first pandemic wave in Germany: potential for bias/Authors' response - Occupation and SARS-CoV-2 infection risk among workers during the first pandemic wave in Germany: potential for bias

[...]this is a potentially very important paper, advancing the evidence in relation to occupational risk factors for infection. [...]in our study, we examined the proportion of tests conducted in each occupational group as part of the sensitivity analyses (see supplementary figure S1, accessible at www.sjweh.fi/article/4037). [...]different motivation for testing due to economic hardship in case of a positive test result is an unlikely explanation, because Germany has a universal healthcare system, including paid sick leave and sickness benefits for all workers (3). [...]we are not convinced that the testnegative design should be the 'gold standard' for studying risk factors for SARS-CoV-2 infections (15).