"Researchers in Sweden have identified a small neutralizing antibody that has the capacity to block the SARS-CoV-2 virus, which causes Covid-19, from entering human cells. In a paper published Friday in Nature Communications, the researchers propose that the nanobody has the potential to be developed as an antiviral treatment."

https://www.courthousenews.com/alpacas-may-hold-key-to-preventing-covid-19-infection/