My understanding is that SARS-CoV-1 is generally treated as a BSL-3 pathogen or a BSL-2 pathogen (for routine diagnostics and other relatively safe work) and not BSL-4. At the time of the outbreak, SARS-CoV-2 would have been a random animal coronavirus that hadn’t yet infected humans, so I’d be surprised if it had more stringent requirements.
Your OP currently states: “a lab studying that class of viruses, of which there is currently only one.” If I’m right that you’re not currently confident this is the case, it might be worth adding some kind of caveat or epistemic status flag or something.
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Some evidence:
A 2017 news article in Nature about the Wuhan Institute of Virology suggests China doesn’t require a BSL-4 for SARS-CoV-1. “Future plans include studying the pathogen that causes SARS, which also doesn’t require a BSL-4 lab.”
[I’m not an expert.]
My understanding is that SARS-CoV-1 is generally treated as a BSL-3 pathogen or a BSL-2 pathogen (for routine diagnostics and other relatively safe work) and not BSL-4. At the time of the outbreak, SARS-CoV-2 would have been a random animal coronavirus that hadn’t yet infected humans, so I’d be surprised if it had more stringent requirements.
Your OP currently states: “a lab studying that class of viruses, of which there is currently only one.” If I’m right that you’re not currently confident this is the case, it might be worth adding some kind of caveat or epistemic status flag or something.
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Some evidence:
A 2017 news article in Nature about the Wuhan Institute of Virology suggests China doesn’t require a BSL-4 for SARS-CoV-1. “Future plans include studying the pathogen that causes SARS, which also doesn’t require a BSL-4 lab.”
CDC’s current interim biosafety guidelines on working with SARS-CoV-2 recommend BSL-3 or BSL-2.
WHO biosafety guidelines from 2003 recommend BSL-3 or BSL-2 for SARS-CoV-1. I don’t know if these are up to date.
Outdated CDC guidelines recommend BSL-3 or BSL-2 for SARS-CoV-1. Couldn’t very quickly Google anything current.