Don’t know about santa clara county, but all homeless on the west coast is sure to be a breeding ground.
“Don’t know much about Santa Clara County. . . “
It is the home of Silicon Valley and because the valley and county favored developing office space over living space, its workers come from throughout the Bay Area and into the Central Valley. Thousands, tens of thousands of workers, commute to and from there every day. There are homeless and it is heavily settled by Asians and travel to Asia is very common, but whatever pops there probably will pop all around the central part of California immediately afterwards unless they shut it down.