The most frequent way of transmitting Covid-19 is through the air. When an infected individual coughs, sneezes, or speaks, small droplets or particles known as aerosols are released from their nose or mouth and can be breathed in by anyone who is within 6 feet of them. The U. S.
Centers for Disease Control and Prevention (CDC) has clarified its guidance on surface transmission in May, stating that this route “is not believed to be the main way of spreading the virus.” The CDC now states that transmission through surfaces “is not believed to be a common way of spreading COVID-19.It is important to note that there is no way to contract Covid-19 through vaccines. The Pfizer and Moderna vaccines use messenger ribonucleic acid (mRNA) which instructs the body on how to produce a protein, in this case, the spike protein found in the new coronavirus. This allows the immune system to recognize and eliminate the SARS-CoV-2 virus when it is encountered. The most common way to contract Covid-19 is by coming into close contact with an infected person.
For more technical information, please refer to Scientific and Technical Resources Related to Indoor Air and Coronavirus (COVID-19) or Key References and Publications on Indoor Air and COVID-19.