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Lockdowns, Cleaner Air Linked to Reduced MIs

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eMediNexus    30 November 2021

When air pollution had decreased during lockdowns in the United States at the onset of the COVID-19 pandemic, there were fewer ST-elevation myocardial infarctions (STEMI), revealed a new study presented at the American Heart Association (AHA) 2021 Scientific Sessions.

Investigators assessed the link between air pollution and STEMI across 29 U.S. states between January 1, 2019 and April 30, 2020. This also included the lockdown period, from March 11 to March 30. During that time, the exhaust emissions and air pollution had considerably decreased. It was noted that on days with lower air pollution, the number of STEMIs was reduced. Every 10 µg/m3 decline in the levels of PM2.5 was found to be linked with 6% lesser STEMIs or 3.7 lesser STEMIs per 100 person-years, after adjustment for U.S. census division, day of week, month, and year… (Medscape)

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