So, for the common cold versions of the coronavirus, they tend to last a short time, but studies with SARS [Severe Acute Respiratory Syndrome]and MERS [Middle East Respiratory Syndrome], the other two very serious coronaviruses, say they last a couple of years, two, threeyears, but it may actually last even longer than that if you have whats called natural boosting, which means the virus is circulating in the environment and youre exposed to it and that triggers your immune system to make new antibodies ...So thats one of the things were going to find out, how long do these antibodies last?