Overall, science is a process. If research came out that changed the recommendations, well, that's how science works. This is no different in my mind than the gradual change in the recommendations towards cigarette smoking over the decades, only in this case it played out over weeks and months (that article was from April of 2020).
If you want something infallible and written in stone from day 1, that's what religious texts are for. But to claim that scientists lost credibility because new research led them to change their minds is to misunderstand the purpose of science.
https://www.snopes.com/news/2020/04/06/the-cdc-now-recommend...
Overall, science is a process. If research came out that changed the recommendations, well, that's how science works. This is no different in my mind than the gradual change in the recommendations towards cigarette smoking over the decades, only in this case it played out over weeks and months (that article was from April of 2020).
If you want something infallible and written in stone from day 1, that's what religious texts are for. But to claim that scientists lost credibility because new research led them to change their minds is to misunderstand the purpose of science.