id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cord-279942-y5io9qzl	Chakrabarty, Rajan K.	Ambient PM2.5 exposure and rapid spread of COVID-19 in the United States	2020-11-09		.txt	text/plain	3079	107	37	Li et al. 2020b; Wu et al. 2020a; Xu et al. 2020) J o u r n a l P r e -p r o o f Journal Pre-proof Exposure to PM 2.5 has a well-established association with increased risks and severe outcomes during infectious disease outbreaks, including COVID-19, the 2009 H1N1, and the 1918 Spanish influenza pandemics (Clay et al. 2018 (Clay et al. , 2019 Morales et al. 2017; Wu et al. 2020b )	cache/cord-279942-y5io9qzl.txt	txt/cord-279942-y5io9qzl.txt
