[user104658]

Originally Posted by Zizu

There are still expert scientists and bacteriologists saying that they’re not convinced about the effectiveness of masks though ...


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It would be strange if it's bacteriologists, as Covid has nothing to do with bacteria.

But anyway - it's not conflicting information, misinformation or lying. There hadn't been studies into whether or not masks were effective in blocking Covid spread and there were varying hypotheses on whether it would help, do nothing, or make matters worse. We're now 4 months into this pandemic, people have been doing the research, and it has been convincingly proven that wearing masks makes a significant difference in community transmission. There's not much more to it than that. The information hasn't "changed" - it just wasn't available before.