This person is expressing an opinion that is vague and has conspiracy theory dogwhistles. This is true of their whole account, which contains references to conspiracy theories such as the illuminati and Obama lying about his identity. This opinion is a response to an article that was posted by someone else, linked here
https://arstechnica.com/?p=2075249?utm_source=bsky
The article is titled “Measles outbreak erupts in one of Texas’ least-vaccinated counties”
The opinion is presumably disbelieving of the necessity of vaccines, or something else about the article, as Ron Burgundy is a media character that will read anything from the teleprompter even if it isn’t true.
Vaccines however have been proven to be very effective and necessary countless times over
here is the history of the measles vaccine.
https://www.cdc.gov/measles/about/history.html