A new nasal spray treatment may be able to give high-risk people immunity from COVID-19 for a short period of time.
The treatment, under development by scientists at the University of Helsinki, in Finland, has shown an ability to block coronavirus infection for up to eight hours in lab studies.
It hasn’t yet been tested in humans and the lab studies are not yet peer reviewed.
This nasal spray is intended for use by immunocompromised patients and others with severe vulnerabilities to Covid.
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