Abstract
Permanent atelectasis of the lower respiratory system was observed on patients after COVID-19 illness, regardless of whether they were SARS-COV-2 vaccinated or not. The same findings were observed on patients who were SARS-COV-2 vaccinated regardless of whether they got ill of COVID-19 or not. These observations allow thoughts about a common cause in all cases. This paper highlights the fact, explains the similarity of the findings and sets the questions: Which is their cause? How can it be rectified?