Is Falling Humidity Driving Rising Coronavirus Cases?

ZH: A Theory As To Why COVID Cases Started Skyrocketing In Central Europe Last Month

The air arriving to the lungs should contain 35 g/kg of water. In summer, the air contained about 10 g/kg and the epithelium had to add 25 g/kg. From October 9 on, 20% more water was needed from the epithelium overnight

A 20% increase in any burden is tough even for a short period. Replace a 75 g racquet by a 90 g one and ask a good badminton player to play his standard play. He will need a rest very soon or be broken. Epithelium would also need a rest but it can't. Mucus covering the upper respiratory epithelium is responsible for moisturizing the inhaled air, acting as a barrier between the environment and the epithelial cells. The mucosal microbiome also turns the inhaled viral particles harmless.

When absolute humidity drops, the water supply to the epithelium should be increased but do we know how fast such change can take place? And is there a limit to the water supply? How many have no idea of the importance of mucosal hydration of the air at all? In the winter 2020/21, Estonia had two major drops of absolute humidity. From average 8 g/kg to average 5 g/kg on Oct 14-20, triggering the rapid increase in infection. Average humidity then gradually decreased to average 4 g/kg by December, population acclimatized...

The frontline to protect each individual from viral infection and disease are mucosal microbes who are just unable to perform when the individual has chosen to, be unwillingly, dry up their natural environment and expose the mucosal cells to all possible pathogens. It makes no sense to assume that any intervention other than water could compensate for the chronical dehydration from dry indoor environment in cool season, inadequate water intake (eg in nursery homes), or excessive sweating in hot summer.

Meanwhile when engineers keep themselves busy solving the problem of dry indoor air, hanging wet towels can provide massive, immediate relief to your mucosal microbiome at almost no cost.

This is a much better explanation for society than the boosters driving up cases. It would be the worst case if the above is true and the boosters are doing something negative to the immune system because indoor humidity is tumbling as booster shots surge in the USA.