into the virus. actually catastrophic mutations for the virus so it's no longer effectively replicating. and that use of the mutation word is very important, pam, because i have a feeling when it is released through emergency use, it will not be authorized for pregnancy until it's better studied and make certain that there's no untoward effect on the fetus. for pregnant women, again, it's just another reminder it's critical that you get vaccinated. >> yet pregnant women at still such a high rate are unvaccinated. i think in the uk there was a study out recently where 1 in 5 covid patients in the hospital were pregnant women. what do you make of that? how do you get the word out to pregnant women on how important vaccines are? >> it's so important. pregnant women do not do well with the covid-19 virus. high rates of hospitalization. and so much loss of life. you can imagine how tragic that would be for any family. so getting the word out that these vaccines are highly safe