This factor can lead to a severe course of COVID-19 infection or even death.

The aim of this study was to investigate the health effects of air pollution and the effects of air pollution on COVID-19 infection, infection, and its spread. As the COVID-19 pandemic continues to spread, it can be seen that many factors, including air pollution, can affect the transmission of the infection.

Studies have shown that air pollution increases the frequency and severity of disease, but there is still very little data available to ensure its accuracy and there is still no clear quantitative impact of air pollution on disease.

The main assumptions of the investigation:

1. Air pollution causes chronic diseases such as asthma, chronic obstructive pulmonary disease, lung cancer, heart disease, and diabetes. As is well known, many of these illnesses result in hospitalization for COVID-19 infection, serious illness, or even death. For this reason alone, the negative impact of air pollution in the COVID-19 pandemic is of great concern.

2. Air pollution has been shown to reduce the resistance of the respiratory tract to bacterial and viral infections other than severe acute respiratory syndrome. However, there is evidence that people who live in high-pollution areas are more likely to become infected with SARS-CoV-2, increasing the risk of developing COVID-19. However, outbreaks of infection and air pollution are also related to population density and other variables, so it is still very difficult to identify any specific effect of pollution, distinguishing it from other causes of COVID-19 outbreaks. The effects of air pollution on the occurrence and severity of COVID-19 have likely been overestimated in studies to date.

3. There are methods for conducting much more precise studies of the links between air pollution and COVID-19, but such studies are more complex and there are privacy concerns in obtaining the necessary data. High-resolution temporal and spatial data is needed to investigate whether air pollution affects SARS-CoV-2 infection and COVID-19 results. In a few years, the scientific community will be able to apply all the advanced tools to study the effects of air pollution in large cohorts and administrative databases, with excellent opportunities to include data at the individual level.

4. The short-term effects of air pollution have been shown to increase hospitalizations for respiratory and heart disease. In a large proportion of people with COVID-19 infection, the condition has been exacerbated by long-term adverse effects on the heart, respiratory tract, and other human organ systems. There is a legitimate concern that these conditions may be exacerbated by the long-term effects of air pollution.

5. The overall impact of air pollution on chronic heart and lung disease is high enough to motivate aggressive air pollution reduction policies. This policy is also likely to protect the population from deaths from COVID-19, possibly related to air pollution.