Scaling up antiretroviral treatment services in Karnataka, India: impact on CD4 counts of HIV-infected people.

Setting: Twelve antiretroviral treatment centres under National AIDS Control Programme (NACP), Karnataka State, India.

Objective: For the period 2004-2011, to describe the trends in the numbers of people living with HIV (PLHIV) registered for care and their median baseline CD4 counts, disaggregated by age and sex.

Design: Descriptive study involving analysis of routinely captured data (year of registration, age, sex, baseline CD4 count) under NACP.