I remember a conversation with an Infectious Disease Nurse in the mid/late 2000s (circa late Jorge Bush or early Barry Sotero time frame). TB was on the rise in Kansas City for the first time in decades, and she flat out said that the main source was from illegals and showed me the data. If it was true back then it's true by at least a factor of 10 now.
I remember, a few years back, that I was chastised for daring to remark that an outbreak in Los Angeles for cholera was likely due to an insurgence of illegal aliens.
The Leftist rebuking my assertion was fully armed by the MSM reports that the cholera came from Jews who had been in Romania, not from revered Illegals crossing into the porous California border.