As a result, a change in eligibility guidelines can alter the distribution by CD4 + cell count of new patients. Spectrum allocates new ART patients by CD4 + cell count on the basis of the proportion of eligible people not on treatment and expected mortality if treatment is not initiated.
As a result of new WHO guidelines released last year, a number of programs are moving to ‘treat all,’ meaning that all people living with HIV are eligible for treatment. These populations include pregnant women, people coinfected with HIV and TB, serodiscordant couples, sex workers, MSM, and people who inject drugs.
Special populations can also be identified that are eligible for treatment regardless of CD4 + cell count.