Long COVID
Persistent symptoms following recovery from acute COVID-19.
Mask Fit Testing
A procedure to ensure a mask fits properly for optimal protection.
Mask Mandates
Policies requiring face coverings to reduce pathogen spread.
MERV
Minimum Efficiency Reporting Value, a scale measuring the effectiveness of air filters.
Microbial Load
The number of microorganisms in a given sample.
Microdroplets
Tiny droplets that remain suspended in the air for longer periods.
mRNA Vaccines
Vaccines using messenger RNA to instruct cells to produce a viral protein for immunity.
Mutations
Changes in a virus’s genetic material that may affect transmissibility or severity.
N95 Respirator
A mask that filters out 95% of airborne particles.
Negative Pressure Room
A room designed to prevent air from escaping to other areas.
