COVID19 outbreak in Lombardy, Italy: An analysis on the short-term relationship between air pollution, climatic factors and the susceptibility to SARS-CoV-2 infection.

Environ Res · 2021 · PMC8078046 · PMID 33930404

Europe PMC DOI

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a decreasing trendno p-value reported

Similarly, PM 2.5 levels above the threshold values between 24 μg/m 3 and 34 μg/m 3 determined a decreasing trend in the number of new cases at lags from 1 to 8, while levels above 29 μg/m 3 determined an increase of cases at lags 14 and 15 ( Fig. 2 ).

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