Articles by Dr. Erdman are for informational purposes, and are not to be taken as specific medical advice.
“Flu season” has that name for multiple reasons. One that I
preach about regularly is the “lack of sunshine” season, or loss of vitamin D
in our bodies. Another is the cooler weather in the Northern hemisphere during
winter months playing a role in viral particles being able to sustain
themselves for longer periods of time.
But there is very recent research that shows the indoor
humidity level also plays a key role in viral transmission rates.
Researchers from MIT collected data from 125 countries regarding Covid-19 cases and relative indoor humidity. They analyzed the data for three months. What they found was that relative indoor humidity (RH) had the most significant correlation with daily new cases and daily new deaths.