In individuals with HIV, the number of CD4 cells correspond with various types of opportunistic infections. The image above briefly mentions the CD4 cell count and the possible opportunistic infections. Reference: https://www.google.com/search?q=cd4+count+and+diseases&sxsrf=AOaemvKi6m_eFvSnZal_8AiN-DudPIJQoQ:1638637380494&tbm=isch&source=iu&ictx=1&fir=uqDG2Qd_wUC7RM%252CAt58g3aNrfukKM%252C_%253Bec5ADHGm4QqobM%252CuBh3IQs86DUtMM%252C_%253BPTZz-Xf3uOKA2M%252Cmydp1mEqe-fpPM%252C_%253By7G9_FKFw8fmDM%252C55NEYMI4dRIV2M%252C_%253BarfCfIMz7djHIM%252CP-Qba1IkWF8v9M%252C_%253BhaG6rXa7TLcEAM%252CnBW0uMbk3IIzyM%252C_%253Bg9j-bf0znGcd4M%252CqFK00SaamMOj2M%252C_%253BgVEwTeZ2nw7JZM%252Cwi_LrT0W_NnJTM%252C_%253BqpV45LkGNzxdSM%252C7j6oVg_j4zGruM%252C_%253BhsmhCbzjJR6_PM%252CTi4gVc8VIAeAaM%252C_&vet=1&usg=AI4_-kTKTAtRl8YpSEWWc2wWMSADNrkWEA&sa=X&ved=2ahUKEwimj-v3z8r0AhV6UGwGHbOYBm0Q9QF6BAgDEAE&cshid=1638637388384936#imgrc=PTZz-Xf3uOKA2M Image via: https://www.researchgate.net/publication/342406376_Frequency_of_opportunistic_infection_in_PL_HIV_and_its_role_in_monitoring_of_ART_1_failure/figures?lo=1&utm_source=google&utm_medium=organic