[LilFarmer]

I saw a tweet along these lines the other day, something about the worst outbreaks being around the 40 degree latitude

I just thought it was more of a lack of vitamin D/sunshine in winter.

[PA Engineer]

Possible. In the past there may not have been herd immunity acquired by supplement intervention.

My wife was shocked when all the blood work for her patients came back deficient for D. She does smack her head when she gets home after recommending the patients supplement. They always ask if there is a Rx covered by insurance.