Here is what I posted regarding the ship with over 200 passengers who are sick:

The longer folks stay on the ship, the more victims there will be because cruise ships are metal containers full of Wifi. The Wifi pings and pings some more. This lowers The passengers' electrical immunity with a mild virus turning into a more serious situation.

Our membrane potential is electrical with a negative charge inside our cells. The potential repels viruses and bacteria which are both also negatively charged.

It's an electric system of defense and the Wifi is electric, too, with its pulsed positively charged ions wreaking havoc - sometimes slowly but always surely.

[Added] No one is immune to the effects of too much exposure to electronics because it's based on the fundamentals of negative and positive charges.