Sunlight (vitamin D) and less mass transit.
Vitamin D3 levels, fewer obese people and much lower initial viral load in the infected people.
Sitting next to an infected person for 30 minutes on that Metro North train in to the city is WAY different than brushing against an infected person in the produce section.
And D3 levels are likely much higher even in the ‘indoors’ type people. Just walking to your car at lunch gets you a dose of D3 unlike NYC that’s cloudy, cold and north of 40N.
We’ll also see that the strain predominant in SoCal is on a different phylogenetic branch than the one in NYC.
UV from the sun. It ends the flu season as the sun is more direct, and the atmosphere doesn’t block the UV as effectively. UV is very effective at killing viruses. The flu season starts when solar radiation is not as strong in the fall. Going outside in the sunlight kills the virus on our skin and clothing. Not as much transmission.
Precisely, my good FRiend.
The opposite of what our caretaker overlords want. They push us to get let sunlight by convincing people that with even moderate exposure to the sun and you will get skin cancer and ride more mass transit to save the planet.
This is the preventative and cure for colds and seasonal flu and probably at least mitigates Red Chinese Flu. Sunshine is only good in the summer when people are outside in short sleeves and hatless and the sun is at a high angle. The rest of the year Vitamin D3 supplements have kept me virus free for 16 years.