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As the outbreak continues, COVID-19 has claimed more than 200,000 lives in the United States and wrevered damage to public health systems and the economy. In a recent study published in the journal
of Cell Press, researchers at Emory University in the United States found that long-term exposure to urban air pollution may make COVID-19 more deadly.
"Long- and short-term exposure to air pollution increases the risk of oxidative stress, acute inflammation and respiratory infections, with direct and indirect systemic effects on the human body," said Liang Donghai and Pomegranate Flower of Emory University, one of the lead authors of the paper. The
analyzed air pollutants from major cities in 3,122 U.S. counties from January to July, including fine particulate matter (PM
), nitrogen dioxide (NO
) and ozone (O
). To study the relationship between these pollutants and the severity of COVID-19 results, they investigated two main death outcomes: mortality rates (i.e., deaths in confirmed COVID-19 patients) and mortality (i.e., COVID-19 deaths in the general population). These two indicators can suggest biological sensitivity to COVID-19 deaths and provide information on the severity of COVID-19 deaths in the general population.
analysis showed that NO
had the strongest independent correlation with the susceptivity of COVID-19 to death. For every
4.6 pp (one in a billion) increase in no-air no, the mortality rates and mortality rates of COVID-19 increased by 11.3% and 16.2%, respectively. In addition, the researchers found that 14,672
could have been avoided by reducing the number of people exposed to NO for a long time by as much as 4.6 ppb.
the team also observed a significant
between PM exposure and COVID death rates,
significant correlation with O.P.
" long-term exposure to urban air pollution, particularly no
pollution, may increase the sensitivity of severe COVID-19 deaths. "It's important to convey this message to public health practitioners and policy makers so that they can consider protecting vulnerable groups living in historically high NO
pollution environments, including metropolitan areas in New York, New Jersey, California and Arizona. Liang
also pointed out that air pollution is a health equity problem: no
burden of pollution is not evenly distributed. Lower-income and people of color often face higher levels of environmental air pollution and may be more severely affected. With not many living options, many people live near highways or industrial land, which makes them particularly vulnerable to air pollution.
Continue and expand current efforts to reduce traffic emissions and environmental air pollution may be an important component in reducing the death rate and mortality levels of COVID-19 in the United States," said Liang Donghai, a professor at the University of Hong Kong. (Source: Tang Erdu, China Science Daily)
related paper information: