I thought the US government had just decided that the cause of autism was vaccines </sarcasm>

no sarcasm tags needed unfortunately, and we autism scientists are very worried/ For example, as I submitted a few days ago: https://news.ycombinator.com/item?id=49422954

emptybits an hour ago | parent | prev [-]

No need for your </sarcasm> tag. The United States makes repeated claims linking childhood vaccines to autism.

	▲	maddie0 24 minutes ago \| parent [-]
		Come now! It is clear that the sarcasm indicator wasn't suggesting that the government didn't really announce that. The sarcasm was in the invocation of governmental authority, which is thereby implied to be ill-founded and not worth listening to.