HomeCOVID-19Pollution raises COVID-19 hospitalization risk: Research Study

Pollution raises COVID-19 hospitalization risk: Research Study

According to a new study, air pollution increases COVID-19 hospitalization risk.

The peer-reviewed study indicated that exposure to typical air contaminants raised hospitalization risk by 30% among fully vaccinated patients.

“Among vaccinated persons, the harmful effect of air pollution exposure is a little reduced,” said co-author Zhanghua Chen of USC. It’s not statistically significant.

More than 50,000 COVID-19 patients in Southern California were studied. Estimated air pollution exposure was computed for every residential address using publicly-available data on PM2.5, NO2, and O3 levels in the month and year before each patient’s diagnosis.

Long-term and short-term air pollution exposure may influence COVID-19 severity through distinct processes.

Read story

Long-term air pollution exposure is connected to an increased risk of cardiovascular and lung illness, which can worsen COVID-19 symptoms. Short-term air pollution exposure may intensify lung inflammation and impair immunological responses. Since COVID-19 is a respiratory disorder, air quality affected patient outcomes.

Short-term exposure to nitrogen dioxide and fine particles increased hospitalization risk by 13 to 14% in unvaccinated COVID-19 patients. Long-term exposure raised the risk by 22 to 24%. The risks were marginally lower for partially and completely vaccinated people, but not significantly. Hospitalization rates were unaffected by ozone.

The study found that COVID-19 immunization reduces hospitalizations.

Fully vaccinated people had a 90% lower risk of COVID hospitalization and partially vaccinated people had a 50% reduced risk.

“These findings show that, while COVID-19 vaccines reduce hospitalization risk, vaccinated people exposed to polluted air are at increased risk for worse outcomes,” said co-author Anny Xiang, a senior research scientist at Kaiser Permanente, an American healthcare consortium.

Since improving air quality could reduce COVID-19 cases, researchers are researching the effects of air purifiers on patients.


Please enter your comment!
Please enter your name here

Written by Dr. Ozair (CEO of SignSymptom.com) as physician writers are physicians who write creatively in fields outside their practice of medicine.

Most Popular