Some basic observations from a basic person below.
What are some of the things needed for the virus to spread?
People:
There must be people to have human to human spread. Is it reasonable to expect the more people the more spread?
NYC stats:
| Location | Total Pop | Pop Density | Total Positive |
| Greater NYC | 8,126,455 | 27,000/sq mile | 105,000 |
D.C. stats:
| Location | Total Pop | Pop Density | Total Positive |
| Washington DC | 705,000 | 11,500/sq mile | 902 |
While it’s true that NYC has a much denser population (the number above is skewed even more by Stanton Island), the fact remains that both metro locations are quite densely populated. Why then does DC have less than 1% of the total positive cases as NYC? Does doubling the population density result directly in this type of discrepancy?
Conducive Climate:
NYC and DC are 300 miles apart. Both are basically coastal with no huge geographical impediments in between like mountain ranges or the like. Anecdotal, but the current temp and humidity vary between the two cities by 1 degree and 4% humidity.
Lack of Social Distancing:
DC started their stay at home order on 4/1. NYC 3/22. No idea how well it is being obeyed, but it seems reasonable to think that there is probably some similarity in the two citizenry’s reaction. DC started their order 9 days after NYC, which would lead one to think the virus would have spread more openly for over a week in the city with a fraction of the infections.
Survivability on surfaces:
Is there any way to understand the potential differences between the personal hygiene habits of two population centers? Would it be meaningful enough to produce the difference between 902 and 105,000?
Maybe it’s just testing? If it’s a difference in testing, why the even larger discrepancy in death rate? 3,565 to just 21.
There are strange situations like this all over. LA and Phoenix.
Phoenix still has golf courses and beauty salons open. LA (and CA) has been locked down for over two weeks. Pop density is 3,200/sq mi for Phoenix vs 8,000/sq mi for LA. The weather in LA and Phoenix was fairly close in March with Phoenix being 70’s/50’s and LA 60’s/50’s. Is this related to only population density? LA has denser population that is more strongly locked down. Phoenix has a less dense population that is not as strongly locked down.
Strange times.


