Results Study Subjects At baseline, there have been 62,756 citizens in the 80 trial clusters, of whom 61,280 were eligible, according to age requirements for participation in the trial . A complete of 37,673 subjects were vaccinated: 18,869 in the Vi vaccine group and 18,804 in the hepatitis A vaccine group. During 24 months of follow-up, 2549 vaccinees died or migrated out of the study area, and 44 vaccinees migrated to some other cluster within the analysis area.This deletion is similar to the previously described HPFH-3 deletion. This mutant allele may be similar to a previously defined set of deletions, though precise mapping had not been performed. No various other pairs of the types of deletions have had such comparable downstream breakpoints, and therefore, an assessment of these differences has not previously been possible. Although deletion of the silencer region is vital to get the high fetal hemoglobin amounts and normal red-cellular indexes observed in patients who are heterozygous for HPFH deletions, our data cannot exclude the chance of contributions from potential regulatory sequences located downstream and juxtaposed to the globin genes by deletion.