The first page of the US search results: vaccines.gov, chop.edu, cdc.gov, livescience.com, scientificamerican.com, nytimes.com, newsweek.com, healthline.com, who.int, mayoclinic.org. That's a good mix of the official outlets and some popular explanations. Results change of you specify a different region or no region at all. For reference, these are results in Italian, many of them are rebuttals of a minister claiming that vaccines are useless and dangerous: https://duckduckgo.com/?q=vaccini+pericolosi&t=fpas&ia=web
But if you try to search English terms in a non-English region, expect ask kind of SEO garbage.
https://duckduckgo.com/?q=are+vaccines+dangerous&t=fpas&ia=w...
The first page of the US search results: vaccines.gov, chop.edu, cdc.gov, livescience.com, scientificamerican.com, nytimes.com, newsweek.com, healthline.com, who.int, mayoclinic.org. That's a good mix of the official outlets and some popular explanations. Results change of you specify a different region or no region at all. For reference, these are results in Italian, many of them are rebuttals of a minister claiming that vaccines are useless and dangerous: https://duckduckgo.com/?q=vaccini+pericolosi&t=fpas&ia=web
But if you try to search English terms in a non-English region, expect ask kind of SEO garbage.