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2020 ; 186
(ä): 109639
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First data analysis about possible COVID-19 virus airborne diffusion due to air
particulate matter (PM): The case of Lombardy (Italy)
#MMPMID32668559
Bontempi E
Environ Res
2020[Jul]; 186
(ä): 109639
PMID32668559
show ga
The severe cases of COVID-19 infections in Italy, and notably in Lombardy (mainly
in Brescia and Bergamo areas), registered at the beginning of March 2020,
occurred after a period of PM(10) pollution, that exceeded the concentration of
50 ?g/m(3) (the attention limit) for several days. The two events were supposed
to be correlated, also based on the limited information available about the new
virus. Despite that clear indications about the role of particulate matter (PM)
in the virus mechanism dispersion cannot be found in literature, some researchers
supposed that PM can act as virus carrier, promoting its diffusion through the
air. This paper, for the first time, analyses the PM(10) situation in Lombardy
(from 10th February to March 27, 2020), several days before the sanitary
emergency explosion. The data of the detected infection cases are reported and
discussed parallelly. As a comparison, the situation of Piedmont, located near to
the Lombardy is also presented. Data are reported for Brescia, Bergamo, Cremona,
Lodi, Milano, Monza-Brianza, Pavia (Lombardy), Alessandria, Vercelli, Novara,
Biella, Asti, and Torino (Piedmont). The results show that it is not possible to
conclude that COVID-19 diffusion mechanism also occurs through the air, by using
PM(10) as a carrier. In particular, it is shown that Piedmont cities, presenting
lower detected infections cases in comparison to Brescia and Bergamo in the
investigated period, had most sever PM(10) pollution events in comparison to
Lombardy cities. This first study may serve as a reference to better understand
and predict the factors affecting the COVID-19 diffusion and transmission routes,
focusing on the role of air particulate matter in the atmosphere.