It’s funny, after COVID-19 emerged there was a lot of research into prophylactic nasal sprays that looked promising and then just kind of…disappeared. I kept following it, as it seemed to me a quite sensible way of halting transmission. For example, there was this one from Columbia University and another one approved for use in Israel and New Zealand. Of course, the drawback is that you have to keep using it throughout the day…but I’ve always wondered why this avenue seemed to be so underemphasized.
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