That's 5 out of 11 who were definitely ill, and maybe some of the others, too, on Dragontail. This may have played into why it was taking so long to go up Colchuck?Oh, @Hates Ramen , on that report, the group had already lost 4 members the day before, after they got sick going up Dragontail:
A group of 11 climbers from various locations, many unfamiliar with the local mountains and snowpack, met in Leavenworth, WA to attempt winter alpine climbing objectives in the Colchuck Lake basin. The team completed the roughly 8 mile snow approach on Friday, February 17th, and established a camp on the north end of the lake. On Saturday, February 18th, part of the team attempted to climb nearby Dragontail Peak, but turned around due to members of the group not feeling well. Four of the 11 teammates returned to Leavenworth that evening.