How does it get into the blood? By injection perhaps?
Thank you. I asked the question prior to reading the article. Leads me to other questions, however. How would the virus enter the lungs if it does not transmit in the air? Isn't it spread by droplets? Do they mean aerolized droplets?
Does the hypothesis in the paper help explain why previous attempts to produce a vaccine for SARS were a disaster? Antibody dependent enhancement?