94%, 95% protected against getting sick from covid-19 but soon after the johnson & johnson vaccine it was 72%. 72% is still a god vaccine, but it's not as good as moderna and pfizer's, so i think there's more of a feeling of urgency that a second shot is especially important for those who got johnson & johnson. now, ana, you mentioned mixing and matching. these vaccine experts will hear about a study where some people got pfizer and then as a booster got moderna and then as a booster got johnson & johnson and all of the possible combinations. what they found was that it worked and that it was safe and that actually folks who got johnson & johnson, they were actually better off getting a booster from pfizer or moderna rather than getting another johnson & johnson shot of the right now this is a relatively small study. just under discussion. there will be no recommendations today about mixing and matching. ana? >> elizabeth cohen, thank you. we'll eel stay on top of that