Interestingly, a positive correlation was found between the percentages of CD8+ PD1+ and CD8+ Eomes+, which was exclusive of PASC individuals (r(62) = 0.24 and p = 0.040 for PASC and r(65) = 0.21 and p = 0.14 for non-PASC; Fig. 4C). Here, CD8A is linked to long COVID-19.