It is theorized that Covid-19 viral spread on cruise boats occurred thru air ducts, rather than direct person-to-person contact. Air purifiers designed to catch viral particles may be a prudent addition to workspaces.

Choosing the right type of purifier is important. Filtration size matters.

The Covid-19 virus is 0.12 microns in size.  

HEPA (High Efficiency Particle Air) purifiers are designed to capture 99.97% of 0.3 micron diameter particulates. Although 0.3 microns is larger than 0.12 microns, a NASA article indicates that they are probably helpful for particles much smaller in size, especially when combined with a granular material such as activated carbon. (For people who like reading technical articles, Click HERE to read NASA’s article).

ULPA (Ultra Low Particulate Air) purifiers are designed to capture 99.99% of 0.1 micron diameter particulates. These purifiers may be marketed as Ultra HEPA or Hyper HEPA. Since 0.1 microns is smaller than 0.12, these purifiers are designed to capture viruses.

There are numerous products on the market. Dr. Rodgers is not affiliated with any air purification company, but here are two ULPA product lines to help you begin your search.
IQAir captures down to 0.003 microns. Click HERE to learn more.
Intellipure captures down to 0.007 micron particles. Click HERE to learn more.

Avoid purifiers that dispense ozone or ions into the air without any physical filters.
These machines make dust heavier, thus moving dust from the air column to your floor or counter tops. They don’t actually remove anything from the environment. Additionally, ozone is a respiratory irritant and environmental pollutant causing damage to indoor plants.