What happened after the group ate the antelope?

From the text:

But it did not take long for Salva to regret his haste in eating. After so many weeks of near starvation, his stomach rebelled mightily: He spent most of the night vomiting.

Salva was not alone. Whenever his heaving stomach woke him, he would hurry to the edge of the camp to vomit and find others there doing the same. At one point, Salva found himself in a line of half a dozen people, all in an identical pose—bent over, holding their stomachs, and waiting for the next wave of nausea.