1) If an individual is exposed to viral loads (once or repeatedly) that are below the calculated minimum needed for infection, will that individual’s immune system still begin developing antibodies against whatever viral particles ARE ingested and therefore eventual immunity? Could this account for the large range of infection severities (some show antibodies, but never any symptoms).
2) If an infected individual is given antibodies derived from another virus-recovered individual, will the recipient develop the ability to produce his own antibodies from this treatment and therefore have developed immunity from any future infection and his own ability to supply antibodies for others? Aren’t the donor’s antibodies destroyed in the process of fighting the recipient’s in vivo virus.
3) How long might Covid 19 survive on a face mask if exposed to the virus? Can a mask, worn often and repeatedly, potentially contain enough virus to result in the wearer becoming infected from his/her own mask? What about the constant touching of an ill-fitting mask and then subsequent touching of the face?