The exposure of a substance – a mixture of liquid and solid grains suspended in the air that goes from dust to the spread of viral droplets in the air – has been harmful to human health. Research led by Maria de Fatima Andrade from the University of São Paulo in Brazil found that a rabies case plays an important role in increasing coronavirus cases in cities.
The authors write:
“The findings support the notion of viral transport, i.e., a virus can connect to the preexistent grain case in the air concomitantly. We conclude that a small part, but so- known at PM2.5 in COVID-19 transmission. “
The study “Examining the short-term role of a hate subject in the COVID-19 revolution in U.S. cities” is available as a preview of the medRxiv* server, while the article is under peer review.
Analyzing COVID-19 case data and pollution levels
The researchers looked at the short-term relationships between a rabies topic and how it contributed to COVID-19 cases in U.S. cities in the early stages of the pandemic.
They collected pollution information from December 30, 2019, to July 31, 2020, using several datasets, including the World Air Quality Index project and the 2019 Coronavirus COVID-19 Database (2019- nCoV) from John Hopkins University. They matched city-level pollution data from both datasets to COVID-19 county data. The team then shortened their data analysis to cities with at least 80% data available after their first case, at least 70% of data contained more hateful material. less than 1 µg to PM and nitrogen dioxide and 1 ppm to carbon monoxide.
The researchers analyzed specific material densities of less than 2.5 µm and between 10 and 2.5 µm (PM2.5 and PM10 , separately).
Granger causation analysis was used to find possible relationships between immediate pollution levels and the rate of daily COVID-19 cases in cities. They also used an appropriate logistic curve to quantify the number of COVID-19 accumulated cases. Weak correlations have been used to find a link between the accumulated cases and the effects of pollution in influencing the spread of severe respiratory syndrome (SARS-CoV-2).
Granger causal test spatial distribution between pollutant concentrations and new COVID-19 cases in U.S. counties. Counties where F Granger test p-values are green when below 0.05 and pink when above. Dark gray squares were drawn around colored counties to give a view.
Don’t look for them
Results showed the presence of PM2.5 density was associated with COVID-19 cases in 17 of 44 cities. PM2.5 much higher from 0 to 18 days. Higher lag matched the stimulation time for SARS-CoV-2, PM suggests2.5 congestion greatly influenced the development of revolution.
The researchers conclude that PM2.5 contributes significantly to the coronavirus revolution. They found that this particular material collection increased the incidence of COVID-19 cases in cities by 67%. This correlation was not observed by PM10.
Based on the results, the researchers suggest several explanations:
“We can outline at least three ways that could underpin these relationships: (1) Long-term PM2.5 transparency increases population vulnerability; (2) PM2.5 indicating social movement and (3) PM2.5 is an airborne viral transport assistant. Devices 1 and 2 are difficult features in Equipment 3. “
Other pollutants, such as PM10 and nitrogen dioxide, also linked to new COVID-19 cases, but in fewer cities. Nitrogen dioxide was linked to the COVID-19 case rate in 7 out of 28 cities and PM10 in 8 out of 20 chairs.
Carbon monoxide was significantly associated with the COVID-19 case rate in 4 out of 21 locations. Carbon monoxide was also associated with accumulated case levels with significantly higher concentrations after 26 days.
No pattern was found in the way the new COVID-19 cases spread across cities, revealing potentially difficult effects such as the weather and other specific regional features.
Future work
Given the geographic landscape of the United States and differences in state measures during the pandemic, the researchers suggest that the findings could be transferred to other countries. They say that with more COVID-19 data, future studies would focus on the link between pollution levels and COVD-19 cases in cities around the world.
“Basically, we hope to raise the interest of the scientific community as well as the awareness of the public and decision-makers about the possible collaboration between viral transmission and air pollution,” the newspaper wrote. research team.
In terms of workability, the team says any effort to reduce the spread of COVID-19 cases in cities would help stop the pandemic.
* Important message
bioRxiv publish preliminary scientific reports that are not peer-reviewed and, therefore, should not be seen as final, guiding health-related clinical practice / behavior, or be treated as information established.