What are the “obvious reasons?” It seems to me the obvious reasons are that the claim is that illegal immigration has been blamed for outbreaks of diseases that are relatively uncommon in the U.S. and publishing the full details would provide evidence supporting that claim.
But if that is what happened, then why not publish those details? If that isn’t what happened, then why not publish those details? Facts are always preferred to conjuncture.
Because random people on the internet deciding to target a random family suffering from a serious illness won't remotely help anything. Regardless of the immigration status of the family, they'll be targeted as if they were illegal (even though their kids were explicitly born in the US and are obviously Americans) and the vitriol will ensure their community is less safe.. the ensuing media freakout will make sure that other infected communities are much less likely to turn up to hospitals when they have communal infections, almost guaranteeing the next outbreak will spread further.
Remember the "illegal haitians are eating our cats" bullshit from last summer? When they absolutely weren't and they were all legal refugees anyway? Then the future President weighed in and said the US should deport them anyway?
But if that is what happened, then why not publish those details? If that isn’t what happened, then why not publish those details? Facts are always preferred to conjuncture.