The interesting thing about San Francisco now is that people still wear their masks outdoors despite all the excellent news and the number of new cases going down. Not that that's a bad thing.<p>It'll be interesting to see what happens on June 15 when the mask mandate goes away in CA (theoretically).
What percentage of the population do you need to vaccinate against Covid to reach herd immunity? People who are fully vaccinated are testing positive for infection and presumably can transmit the disease (although at a much reduced rate).<p>And it looks like ~10% of SF is under 12, so unvaccinated plus another 20% of those over 12, so maybe 20-25% of all people are unvaccinated. Is that still herd immunity?
As I wrote on HN early 2020, Wuhan and Shanghai had direct flights to SFO and LAX of 50,000 passengers per week. No doubt corona was in SF very early, possibly late 2019.<p>SF got herd immunity from infections, which is why it was rare that we came anywhere close to ICU capacity. I watched the graphs daily for months, and while the rest of the country was losing their minds, we just didn't see much of a dent, typically in the range of 10% of total beds.<p>The only hysteria was from Newsom, who has ambitions of running for President.