I agree with the overall point here, but starting it off with "Someone on TikTok said...." (or really, any variation of "Someone said....") just completely undermines your credibility. Just say "There are more kids with measles...."
Don't bother with the wishy-washy "someone said" nonsense. Confidently assert your point rather than attributing it to someone else. If you're unsure of the facts and don't want blowback for posting something inaccurate, either verify the facts yourself (it's not hard or time consuming) or just don't post it.