Incidence of T Activation in a Hospital Population

Abstract
The incidence of T activation in a hospital population was studied. T polyagglutinability likely to cause serological problems was found in only 1:10,000 but minor degrees of T activation occurred in 1:200. In a number of cases, severe infections were accompanied by T activation, but any primary association between T activation and anemia was not established. Individuals whose erythrocyte sialic acid levels are slightly lower than normal are those who, when hospital patients, are likely to develop various degrees of T activation.