importantly now, cases surging from the omicron variant. over the past month we have seen the percentage of omicron cases increase and the percentage of delta cases decrease. based on cdc sequencing, we estimate that omicron represents about 95 % of cases in the country and delta represents the remaining 5% of the cases. the sharp rise in cases and the emergence of the transmissible omicron variant emphasizes the importance of vaccinations and boosters. this week fda made several vaccine authorizations and cdc followed the authorizations by making additional vaccine recommendations. first, cdc authorized fda authorized and cdc recommended shortening the window in which people who receive the pfizer covid-19 can get a booster dose from six months to five months. second, fda authorized and cdc recommended that children ages 5