Semi-tangential but the US has decreased labor mobility in the past decades https://libertystreeteconomics.newyorkfed.org/2016/10/what-c...

Still places like Googleplex pull in workers from around the globe

In the coastal bubble sure. But I think the parent is referring to the US in aggregate.

the ICT sector in particular pulls in people worldwide and has a high flight ratio compared to the normal population, domestic and international. so inside the tech bubble in California, I expect more people interact with people outside their core community, than other places. Compared to Omaha or Austin. Compared to Chicago? maybe not.

but I did mean in-the-wide too; i think since we started down the vaccines as herd immunity game in the 50s and 60s we now have more routine travel and the rate of change here has accellerated. When I was a kid in the 60s few flew, my first flight was at 16 and then no more until 24. Now, I fly 10+ times a year worldwide. Thats only 40 years gap.

US immigrants are required to have the MMR vaccine, among others.

Edit: This is inclusive of foreign workers with H1B and other working visas.

On this site people in H1B and other non-immigrant statuses are routinely called "immigrants" so it's better to clarify that only immigrants who obtain an immigrant visa or adjust into immigrant status are required to have vaccines and other medical procedures.

H1b is frequently if not entirely issued to people with dual intent.

Regardless, unless you are an immigration lawyer and extreme pendant, H1b holders are immigrants.

The US classification of immigration intent is not relevant to whether they are immigrants in the common sense of the word.

> The US classification of immigration intent is not relevant to whether they are immigrants in the common sense of the word.

But it is relevant in the context of the statement the parent was replying to:

> US immigrants are required to have the MMR vaccine, among others.

If it's helpful, I have edited the comment to be more specific.

Any link to support your edit? Because when I've got an H1B visa nobody asked me about any vaccination. There is also no mention of any such requirements on various immigration sites listing documents needed for stamping an H1B.

Same question as sibling comment. I did not have to provide proof of vaccination until I applied for a green card.

The rate of unvaccinated children in CA is highly correlated with income and non-Hispanic white populations (LA Times published stats a few years ago). Not sure that jibes with your hypothesis.

Considering just how many people from outside of the US Google employes it's quite possible that they simply came from a country that historically didn't have a good vaccine coverage for example India.

Heck according to this data https://data.worldbank.org/indicator/sh.imm.meas

In 1980 even Germany had 25% vaccination coverage but I'm guessing it could include East Germany too so a developer in their mid 30's simply might not been vaccinated at a young age and if they didn't travel to high risk countries, joined the military or worked with at risk groups it was never caught.

I happen to know with 100% confidence that some Google employees were recently abroad in an area struggling with a measles outbreak. Of course this doesn't mean it came from some place external to the US, but it certainly means it's not impossible.

The measles vaccine is required for a US immigrant visa https://www.uscis.gov/news/questions-and-answers/vaccination...

Starting in 2009, you could’ve been born in Germany in the 80s which had poor coverage at the time immigrated to the US in the late 90’s and you would not be vaccinated.

I think those who legally immigrated to the US needs to be current on their vaccines to be admitted so I expect them to be a lower risk.

That has been in effect only since 2009.

You normally have to provide proof of vaccination history when going through the immigration process.

Sure. But the Bay Area has long had a large population of Indian immigrants without ever having a measles problem. This is almost certainly caused by anti-vax issues rather than immigration from poorly vaccinated countries.

The virus moves more easily with increased social mobility, yes.

But it finds a solid ground much more effectively when herd immunity is compromised, as it is today in many places, thanks to the anti-vax delusion.