Every civilized country has biological labs, containing all sorts of pathogens. America has a plenty - hundreds, in every state, and with a while lot of incidents even during perfect peacetime: https://eu.usatoday.com/story/news/2015/05/28/biolabs-pathogens-location-incidents/26587505/ - and it's not any better in other countries, actually it's usually much worse than that, with the Wuhan leak of course highly related (if it was even entirely just an accident). We in Poland have them too.
The latter (nuclear sites) including nuclear plants, which too became objects of attack and even battlefields - the already post-disaster infamous Chernobyl power plant included in that (Chernobyl was captured from an Ukrainian battalion protecting it on the first day of the failed Russian invasion from Belarus, it's been retaken and was damaged, looted and mined: https://www.bbc.com/news/world-europe-61685643 but without a new nuclear catastrophe), as well as the largest nuclear plant in Europe at Zaporizhzhia, the storming of which was the first official Wagner action in Ukraine (which came after years of Russia denying Wagner's very existence, complete with Prigozhin having used to sue people for reporting he's connected with Wagner) and which still remains on the frontline while housing a Russian garrison including an artillery firebase while online.
Every civilized country has biological labs, containing all sorts of pathogens. America has a plenty - hundreds, in every state, and with a while lot of incidents even during perfect peacetime: https://eu.usatoday.com/story/news/2015/05/28/biolabs-pathogens-location-incidents/26587505/ - and it's not any better in other countries, actually it's usually much worse than that, with the Wuhan leak of course highly related (if it was even entirely just an accident). We in Poland have them too.
The reason for the spill concern is the same as with chemical facilities and storages of all kinds (https://www.chemistryworld.com/news/fears-that-the-war-in-east-of-ukraine-could-lead-to-deadly-chemical-disaster/4015860.article), and with nuclear sites of all kinds too.
The latter (nuclear sites) including nuclear plants, which too became objects of attack and even battlefields - the already post-disaster infamous Chernobyl power plant included in that (Chernobyl was captured from an Ukrainian battalion protecting it on the first day of the failed Russian invasion from Belarus, it's been retaken and was damaged, looted and mined: https://www.bbc.com/news/world-europe-61685643 but without a new nuclear catastrophe), as well as the largest nuclear plant in Europe at Zaporizhzhia, the storming of which was the first official Wagner action in Ukraine (which came after years of Russia denying Wagner's very existence, complete with Prigozhin having used to sue people for reporting he's connected with Wagner) and which still remains on the frontline while housing a Russian garrison including an artillery firebase while online.