Lab leak?<p>Vincent Racaniello, a leading virologist (<a href="https://www.microbe.tv/twiv/" rel="nofollow">https://www.microbe.tv/twiv/</a>) seems to think that the genetic sequence of the covid virus and the bat version of the virus are nearly identical. That genetic evidence seems to suggest that the covid virus had a natural bat source.<p>Vincent talks about and shows safety practices for a "level 4 biolab" (<a href="https://www.bu.edu/articles/2013/video-offers-glimpse-of-biosafety-level-4-lab/" rel="nofollow">https://www.bu.edu/articles/2013/video-offers-glimpse-of-bio...</a>)<p>It might be the case that the biolab safety protocols were not followed. This seems unlikely.<p>It might be the case that there was a cross-species transfer of the virus. This is a frequent event between species.<p>Scientifically, a lab leak is less likely than a species-transfer. Politically, a lab leak is
the only possible (i.e. politically useful) explanation.<p>So your sources of information comes from a world-leading virologist and a state department spokesperson.<p>You decide.